diff --git a/proto/pki/tx.proto b/proto/pki/tx.proto
index c5aee66bf..3d6a9fff3 100644
--- a/proto/pki/tx.proto
+++ b/proto/pki/tx.proto
@@ -21,6 +21,7 @@ service Msg {
   rpc UpdatePkiRevocationDistributionPoint(MsgUpdatePkiRevocationDistributionPoint) returns (MsgUpdatePkiRevocationDistributionPointResponse);
   rpc DeletePkiRevocationDistributionPoint(MsgDeletePkiRevocationDistributionPoint) returns (MsgDeletePkiRevocationDistributionPointResponse);
   rpc AssignVid(MsgAssignVid) returns (MsgAssignVidResponse);
+  rpc RemoveX509Cert(MsgRemoveX509Cert) returns (MsgRemoveX509CertResponse);
 // this line is used by starport scaffolding # proto/tx/rpc
 }
 
@@ -156,4 +157,14 @@ message MsgAssignVid {
 message MsgAssignVidResponse {
 }
 
+message MsgRemoveX509Cert {
+  string signer = 1 [(cosmos_proto.scalar) = "cosmos.AddressString", (gogoproto.moretags) = "validate:\"required\""];
+  string subject = 2 [(gogoproto.moretags) = "validate:\"required,max=1024\""];
+  string subjectKeyId = 3 [(gogoproto.moretags) = "validate:\"required,max=256\""];
+  string serialNumber = 4;
+}
+
+message MsgRemoveX509CertResponse {
+}
+
 // this line is used by starport scaffolding # proto/tx/message
\ No newline at end of file
diff --git a/scripts/starport/upgrade-0.44/07.pki_types.sh b/scripts/starport/upgrade-0.44/07.pki_types.sh
index ec35186e7..5ffa69f30 100755
--- a/scripts/starport/upgrade-0.44/07.pki_types.sh
+++ b/scripts/starport/upgrade-0.44/07.pki_types.sh
@@ -12,6 +12,7 @@ starport scaffold --module pki message AddX509Cert cert --signer signer
 starport scaffold --module pki message ProposeRevokeX509RootCert subject subjectKeyId --signer signer
 starport scaffold --module pki message ApproveRevokeX509RootCert subject subjectKeyId --signer signer
 starport scaffold --module pki message RevokeX509Cert subject subjectKeyId --signer signer
+starport scaffold --module pki message RemoveX509Cert subject subjectKeyId serialNumber --signer signer
 starport scaffold --module pki message RejectAddX509RootCert cert --signer signer
 starport scaffold --module pki message add-pki-revocation-distribution-point vid:uint pid:uint isPAA:bool label crlSignerCertificate issuerSubjectKeyID dataURL dataFileSize:uint dataDigest dataDigestType:uint revocationType:uint --signer signer
 starport scaffold --module pki message update-pki-revocation-distribution-point vid:uint label crlSignerCertificate issuerSubjectKeyID dataURL dataFileSize:uint dataDigest dataDigestType:uint --signer signer
diff --git a/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.pki/module/index.ts b/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.pki/module/index.ts
index e5867ac96..f95d14131 100755
--- a/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.pki/module/index.ts
+++ b/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.pki/module/index.ts
@@ -15,6 +15,7 @@ import { MsgAddPkiRevocationDistributionPoint } from "./types/pki/tx";
 import { MsgAddX509Cert } from "./types/pki/tx";
 import { MsgApproveRevokeX509RootCert } from "./types/pki/tx";
 import { MsgProposeRevokeX509RootCert } from "./types/pki/tx";
+import { MsgRemoveX509Cert } from "./types/pki/tx";
 
 
 const types = [
@@ -29,7 +30,7 @@ const types = [
   ["/zigbeealliance.distributedcomplianceledger.pki.MsgAddX509Cert", MsgAddX509Cert],
   ["/zigbeealliance.distributedcomplianceledger.pki.MsgApproveRevokeX509RootCert", MsgApproveRevokeX509RootCert],
   ["/zigbeealliance.distributedcomplianceledger.pki.MsgProposeRevokeX509RootCert", MsgProposeRevokeX509RootCert],
-  
+  ["/zigbeealliance.distributedcomplianceledger.pki.MsgRemoveX509Cert", MsgRemoveX509Cert],
 ];
 export const MissingWalletError = new Error("wallet is required");
 
@@ -72,7 +73,7 @@ const txClient = async (wallet: OfflineSigner, { addr: addr }: TxClientOptions =
     msgAddX509Cert: (data: MsgAddX509Cert): EncodeObject => ({ typeUrl: "/zigbeealliance.distributedcomplianceledger.pki.MsgAddX509Cert", value: MsgAddX509Cert.fromPartial( data ) }),
     msgApproveRevokeX509RootCert: (data: MsgApproveRevokeX509RootCert): EncodeObject => ({ typeUrl: "/zigbeealliance.distributedcomplianceledger.pki.MsgApproveRevokeX509RootCert", value: MsgApproveRevokeX509RootCert.fromPartial( data ) }),
     msgProposeRevokeX509RootCert: (data: MsgProposeRevokeX509RootCert): EncodeObject => ({ typeUrl: "/zigbeealliance.distributedcomplianceledger.pki.MsgProposeRevokeX509RootCert", value: MsgProposeRevokeX509RootCert.fromPartial( data ) }),
-    
+    msgRemoveX509Cert: (data: MsgRemoveX509Cert): EncodeObject => ({ typeUrl: "/zigbeealliance.distributedcomplianceledger.pki.MsgRemoveX509Cert", value: MsgRemoveX509Cert.fromPartial( data ) }),
   };
 };
 
diff --git a/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.pki/module/rest.ts b/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.pki/module/rest.ts
index 25ce651e6..d83700f44 100644
--- a/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.pki/module/rest.ts
+++ b/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.pki/module/rest.ts
@@ -94,6 +94,8 @@ export type PkiMsgProposeRevokeX509RootCertResponse = object;
 
 export type PkiMsgRejectAddX509RootCertResponse = object;
 
+export type PkiMsgRemoveX509CertResponse = object;
+
 export type PkiMsgRevokeX509CertResponse = object;
 
 export type PkiMsgUpdatePkiRevocationDistributionPointResponse = object;
diff --git a/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.pki/module/types/pki/tx.ts b/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.pki/module/types/pki/tx.ts
index b0834fbbb..297bf780a 100644
--- a/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.pki/module/types/pki/tx.ts
+++ b/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.pki/module/types/pki/tx.ts
@@ -125,6 +125,15 @@ export interface MsgAssignVid {
 
 export interface MsgAssignVidResponse {}
 
+export interface MsgRemoveX509Cert {
+  signer: string
+  subject: string
+  subjectKeyId: string
+  serialNumber: string
+}
+
+export interface MsgRemoveX509CertResponse {}
+
 const baseMsgProposeAddX509RootCert: object = { signer: '', cert: '', info: '', time: 0, vid: 0 }
 
 export const MsgProposeAddX509RootCert = {
@@ -2106,6 +2115,150 @@ export const MsgAssignVidResponse = {
   }
 }
 
+const baseMsgRemoveX509Cert: object = { signer: '', subject: '', subjectKeyId: '', serialNumber: '' }
+
+export const MsgRemoveX509Cert = {
+  encode(message: MsgRemoveX509Cert, writer: Writer = Writer.create()): Writer {
+    if (message.signer !== '') {
+      writer.uint32(10).string(message.signer)
+    }
+    if (message.subject !== '') {
+      writer.uint32(18).string(message.subject)
+    }
+    if (message.subjectKeyId !== '') {
+      writer.uint32(26).string(message.subjectKeyId)
+    }
+    if (message.serialNumber !== '') {
+      writer.uint32(34).string(message.serialNumber)
+    }
+    return writer
+  },
+
+  decode(input: Reader | Uint8Array, length?: number): MsgRemoveX509Cert {
+    const reader = input instanceof Uint8Array ? new Reader(input) : input
+    let end = length === undefined ? reader.len : reader.pos + length
+    const message = { ...baseMsgRemoveX509Cert } as MsgRemoveX509Cert
+    while (reader.pos < end) {
+      const tag = reader.uint32()
+      switch (tag >>> 3) {
+        case 1:
+          message.signer = reader.string()
+          break
+        case 2:
+          message.subject = reader.string()
+          break
+        case 3:
+          message.subjectKeyId = reader.string()
+          break
+        case 4:
+          message.serialNumber = reader.string()
+          break
+        default:
+          reader.skipType(tag & 7)
+          break
+      }
+    }
+    return message
+  },
+
+  fromJSON(object: any): MsgRemoveX509Cert {
+    const message = { ...baseMsgRemoveX509Cert } as MsgRemoveX509Cert
+    if (object.signer !== undefined && object.signer !== null) {
+      message.signer = String(object.signer)
+    } else {
+      message.signer = ''
+    }
+    if (object.subject !== undefined && object.subject !== null) {
+      message.subject = String(object.subject)
+    } else {
+      message.subject = ''
+    }
+    if (object.subjectKeyId !== undefined && object.subjectKeyId !== null) {
+      message.subjectKeyId = String(object.subjectKeyId)
+    } else {
+      message.subjectKeyId = ''
+    }
+    if (object.serialNumber !== undefined && object.serialNumber !== null) {
+      message.serialNumber = String(object.serialNumber)
+    } else {
+      message.serialNumber = ''
+    }
+    return message
+  },
+
+  toJSON(message: MsgRemoveX509Cert): unknown {
+    const obj: any = {}
+    message.signer !== undefined && (obj.signer = message.signer)
+    message.subject !== undefined && (obj.subject = message.subject)
+    message.subjectKeyId !== undefined && (obj.subjectKeyId = message.subjectKeyId)
+    message.serialNumber !== undefined && (obj.serialNumber = message.serialNumber)
+    return obj
+  },
+
+  fromPartial(object: DeepPartial<MsgRemoveX509Cert>): MsgRemoveX509Cert {
+    const message = { ...baseMsgRemoveX509Cert } as MsgRemoveX509Cert
+    if (object.signer !== undefined && object.signer !== null) {
+      message.signer = object.signer
+    } else {
+      message.signer = ''
+    }
+    if (object.subject !== undefined && object.subject !== null) {
+      message.subject = object.subject
+    } else {
+      message.subject = ''
+    }
+    if (object.subjectKeyId !== undefined && object.subjectKeyId !== null) {
+      message.subjectKeyId = object.subjectKeyId
+    } else {
+      message.subjectKeyId = ''
+    }
+    if (object.serialNumber !== undefined && object.serialNumber !== null) {
+      message.serialNumber = object.serialNumber
+    } else {
+      message.serialNumber = ''
+    }
+    return message
+  }
+}
+
+const baseMsgRemoveX509CertResponse: object = {}
+
+export const MsgRemoveX509CertResponse = {
+  encode(_: MsgRemoveX509CertResponse, writer: Writer = Writer.create()): Writer {
+    return writer
+  },
+
+  decode(input: Reader | Uint8Array, length?: number): MsgRemoveX509CertResponse {
+    const reader = input instanceof Uint8Array ? new Reader(input) : input
+    let end = length === undefined ? reader.len : reader.pos + length
+    const message = { ...baseMsgRemoveX509CertResponse } as MsgRemoveX509CertResponse
+    while (reader.pos < end) {
+      const tag = reader.uint32()
+      switch (tag >>> 3) {
+        default:
+          reader.skipType(tag & 7)
+          break
+      }
+    }
+    return message
+  },
+
+  fromJSON(_: any): MsgRemoveX509CertResponse {
+    const message = { ...baseMsgRemoveX509CertResponse } as MsgRemoveX509CertResponse
+    return message
+  },
+
+  toJSON(_: MsgRemoveX509CertResponse): unknown {
+    const obj: any = {}
+    return obj
+  },
+
+  fromPartial(_: DeepPartial<MsgRemoveX509CertResponse>): MsgRemoveX509CertResponse {
+    const message = { ...baseMsgRemoveX509CertResponse } as MsgRemoveX509CertResponse
+    return message
+  }
+}
+
 /** Msg defines the Msg service. */
 export interface Msg {
   ProposeAddX509RootCert(request: MsgProposeAddX509RootCert): Promise<MsgProposeAddX509RootCertResponse>
@@ -2118,8 +2271,8 @@ export interface Msg {
   AddPkiRevocationDistributionPoint(request: MsgAddPkiRevocationDistributionPoint): Promise<MsgAddPkiRevocationDistributionPointResponse>
   UpdatePkiRevocationDistributionPoint(request: MsgUpdatePkiRevocationDistributionPoint): Promise<MsgUpdatePkiRevocationDistributionPointResponse>
   DeletePkiRevocationDistributionPoint(request: MsgDeletePkiRevocationDistributionPoint): Promise<MsgDeletePkiRevocationDistributionPointResponse>
-  /** this line is used by starport scaffolding # proto/tx/rpc */
   AssignVid(request: MsgAssignVid): Promise<MsgAssignVidResponse>
+  RemoveX509Cert(request: MsgRemoveX509Cert): Promise<MsgRemoveX509CertResponse>
 }
 
 export class MsgClientImpl implements Msg {
@@ -2192,6 +2345,12 @@ export class MsgClientImpl implements Msg {
     const promise = this.rpc.request('zigbeealliance.distributedcomplianceledger.pki.Msg', 'AssignVid', data)
     return promise.then((data) => MsgAssignVidResponse.decode(new Reader(data)))
   }
+
+  RemoveX509Cert(request: MsgRemoveX509Cert): Promise<MsgRemoveX509CertResponse> {
+    const data = MsgRemoveX509Cert.encode(request).finish()
+    const promise = this.rpc.request('zigbeealliance.distributedcomplianceledger.pki.Msg', 'RemoveX509Cert', data)
+    return promise.then((data) => MsgRemoveX509CertResponse.decode(new Reader(data)))
+  }
 }
 
 interface Rpc {
diff --git a/x/pki/client/cli/tx.go b/x/pki/client/cli/tx.go
index 56803106e..63ef89023 100644
--- a/x/pki/client/cli/tx.go
+++ b/x/pki/client/cli/tx.go
@@ -33,6 +33,7 @@ func GetTxCmd() *cobra.Command {
 	cmd.AddCommand(CmdUpdatePkiRevocationDistributionPoint())
 	cmd.AddCommand(CmdDeletePkiRevocationDistributionPoint())
 	cmd.AddCommand(CmdAssignVid())
+	cmd.AddCommand(CmdRemoveX509Cert())
 	// this line is used by starport scaffolding # 1
 
 	return cmd
diff --git a/x/pki/client/cli/tx_remove_x_509_cert.go b/x/pki/client/cli/tx_remove_x_509_cert.go
new file mode 100644
index 000000000..3759424f9
--- /dev/null
+++ b/x/pki/client/cli/tx_remove_x_509_cert.go
@@ -0,0 +1,46 @@
+package cli
+
+import (
+	"strconv"
+
+	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/cosmos/cosmos-sdk/client/flags"
+	"github.com/cosmos/cosmos-sdk/client/tx"
+	"github.com/spf13/cobra"
+	"github.com/zigbee-alliance/distributed-compliance-ledger/x/pki/types"
+)
+
+var _ = strconv.Itoa(0)
+
+func CmdRemoveX509Cert() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "remove-x-509-cert [subject] [subject-key-id] [serial-number]",
+		Short: "Broadcast message RemoveX509Cert",
+		Args:  cobra.ExactArgs(3),
+		RunE: func(cmd *cobra.Command, args []string) (err error) {
+			argSubject := args[0]
+			argSubjectKeyId := args[1]
+			argSerialNumber := args[2]
+
+			clientCtx, err := client.GetClientTxContext(cmd)
+			if err != nil {
+				return err
+			}
+
+			msg := types.NewMsgRemoveX509Cert(
+				clientCtx.GetFromAddress().String(),
+				argSubject,
+				argSubjectKeyId,
+				argSerialNumber,
+			)
+			if err := msg.ValidateBasic(); err != nil {
+				return err
+			}
+			return tx.GenerateOrBroadcastTxCLI(clientCtx, cmd.Flags(), msg)
+		},
+	}
+
+	flags.AddTxFlagsToCmd(cmd)
+
+	return cmd
+}
diff --git a/x/pki/handler.go b/x/pki/handler.go
index 7ef7098b5..68db083bc 100644
--- a/x/pki/handler.go
+++ b/x/pki/handler.go
@@ -63,6 +63,9 @@ func NewHandler(k keeper.Keeper) sdk.Handler {
 			res, err := msgServer.AssignVid(sdk.WrapSDKContext(ctx), msg)
 
 			return sdk.WrapServiceResult(ctx, res, err)
+		case *types.MsgRemoveX509Cert:
+			res, err := msgServer.RemoveX509Cert(sdk.WrapSDKContext(ctx), msg)
+			return sdk.WrapServiceResult(ctx, res, err)
 			// this line is used by starport scaffolding # 1
 		default:
 			errMsg := fmt.Sprintf("unrecognized %s message type: %T", pkitypes.ModuleName, msg)
diff --git a/x/pki/keeper/msg_server_remove_x_509_cert.go b/x/pki/keeper/msg_server_remove_x_509_cert.go
new file mode 100644
index 000000000..4afa3342a
--- /dev/null
+++ b/x/pki/keeper/msg_server_remove_x_509_cert.go
@@ -0,0 +1,37 @@
+package keeper
+
+import (
+	"context"
+	"fmt"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
+
+	pkitypes "github.com/zigbee-alliance/distributed-compliance-ledger/types/pki"
+	"github.com/zigbee-alliance/distributed-compliance-ledger/x/pki/types"
+)
+
+func (k msgServer) RemoveX509Cert(goCtx context.Context, msg *types.MsgRemoveX509Cert) (*types.MsgRemoveX509CertResponse, error) {
+	ctx := sdk.UnwrapSDKContext(goCtx)
+
+	certificates, found := k.GetApprovedCertificates(ctx, msg.Subject, msg.SubjectKeyId)
+	if !found {
+		return nil, pkitypes.NewErrCertificateDoesNotExist(msg.Subject, msg.SubjectKeyId)
+	}
+
+	if certificates.Certs[0].IsRoot {
+		return nil, pkitypes.NewErrInappropriateCertificateType(
+			fmt.Sprintf("Inappropriate Certificate Type: Certificate with subject=%v and subjectKeyID=%v "+
+				"is a root certificate. To propose revocation of a root certificate please use "+
+				"`PROPOSE_REVOKE_X509_ROOT_CERT` transaction.", msg.Subject, msg.SubjectKeyId),
+		)
+	}
+
+	if msg.Signer != certificates.Certs[0].Owner {
+		return nil, sdkerrors.Wrapf(sdkerrors.ErrUnauthorized,
+			"Only owner can revoke certificate using `REVOKE_X509_CERT`",
+		)
+	}
+
+	return &types.MsgRemoveX509CertResponse{}, nil
+}
diff --git a/x/pki/module_simulation.go b/x/pki/module_simulation.go
index 3576b6232..7b1ec67a0 100644
--- a/x/pki/module_simulation.go
+++ b/x/pki/module_simulation.go
@@ -69,6 +69,10 @@ const (
 	// TODO: Determine the simulation weight value.
 	defaultWeightMsgAssignVid int = 100
 
+	opWeightMsgRemoveX509Cert = "op_weight_msg_create_chain"
+	// TODO: Determine the simulation weight value
+	defaultWeightMsgRemoveX509Cert int = 100
+
 	// this line is used by starport scaffolding # simapp/module/const.
 )
 
@@ -223,6 +227,17 @@ func (am AppModule) WeightedOperations(simState module.SimulationState) []simtyp
 		pkisimulation.SimulateMsgAssignVid(am.keeper),
 	))
 
+	var weightMsgRemoveX509Cert int
+	simState.AppParams.GetOrGenerate(simState.Cdc, opWeightMsgRemoveX509Cert, &weightMsgRemoveX509Cert, nil,
+		func(_ *rand.Rand) {
+			weightMsgRemoveX509Cert = defaultWeightMsgRemoveX509Cert
+		},
+	)
+	operations = append(operations, simulation.NewWeightedOperation(
+		weightMsgRemoveX509Cert,
+		pkisimulation.SimulateMsgRemoveX509Cert(am.keeper),
+	))
+
 	// this line is used by starport scaffolding # simapp/module/operation
 
 	return operations
diff --git a/x/pki/simulation/remove_x_509_cert.go b/x/pki/simulation/remove_x_509_cert.go
new file mode 100644
index 000000000..c55f70c2c
--- /dev/null
+++ b/x/pki/simulation/remove_x_509_cert.go
@@ -0,0 +1,29 @@
+package simulation
+
+import (
+	"math/rand"
+
+	"github.com/cosmos/cosmos-sdk/baseapp"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
+
+	pkitypes "github.com/zigbee-alliance/distributed-compliance-ledger/types/pki"
+	"github.com/zigbee-alliance/distributed-compliance-ledger/x/pki/keeper"
+	"github.com/zigbee-alliance/distributed-compliance-ledger/x/pki/types"
+)
+
+func SimulateMsgRemoveX509Cert(
+	k keeper.Keeper,
+) simtypes.Operation {
+	return func(r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context, accs []simtypes.Account, chainID string,
+	) (simtypes.OperationMsg, []simtypes.FutureOperation, error) {
+		simAccount, _ := simtypes.RandomAcc(r, accs)
+		msg := &types.MsgRemoveX509Cert{
+			Signer: simAccount.Address.String(),
+		}
+
+		// TODO: Handling the RemoveX509Cert simulation
+
+		return simtypes.NoOpMsg(pkitypes.ModuleName, msg.Type(), "RemoveX509Cert simulation not implemented"), nil, nil
+	}
+}
diff --git a/x/pki/types/codec.go b/x/pki/types/codec.go
index a91b5d20e..8c1e23a66 100644
--- a/x/pki/types/codec.go
+++ b/x/pki/types/codec.go
@@ -19,6 +19,7 @@ func RegisterCodec(cdc *codec.LegacyAmino) {
 	cdc.RegisterConcrete(&MsgUpdatePkiRevocationDistributionPoint{}, "pki/UpdatePkiRevocationDistributionPoint", nil)
 	cdc.RegisterConcrete(&MsgDeletePkiRevocationDistributionPoint{}, "pki/DeletePkiRevocationDistributionPoint", nil)
 	cdc.RegisterConcrete(&MsgAssignVid{}, "pki/AssignVid", nil)
+	cdc.RegisterConcrete(&MsgRemoveX509Cert{}, "pki/RemoveX509Cert", nil)
 	// this line is used by starport scaffolding # 2
 }
 
@@ -56,6 +57,9 @@ func RegisterInterfaces(registry cdctypes.InterfaceRegistry) {
 	registry.RegisterImplementations((*sdk.Msg)(nil),
 		&MsgAssignVid{},
 	)
+	registry.RegisterImplementations((*sdk.Msg)(nil),
+		&MsgRemoveX509Cert{},
+	)
 	// this line is used by starport scaffolding # 3
 
 	msgservice.RegisterMsgServiceDesc(registry, &_Msg_serviceDesc)
diff --git a/x/pki/types/message_remove_x_509_cert.go b/x/pki/types/message_remove_x_509_cert.go
new file mode 100644
index 000000000..878b2937f
--- /dev/null
+++ b/x/pki/types/message_remove_x_509_cert.go
@@ -0,0 +1,57 @@
+package types
+
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
+	pkitypes "github.com/zigbee-alliance/distributed-compliance-ledger/types/pki"
+	"github.com/zigbee-alliance/distributed-compliance-ledger/utils/validator"
+)
+
+const TypeMsgRemoveX509Cert = "remove_x_509_cert"
+
+var _ sdk.Msg = &MsgRemoveX509Cert{}
+
+func NewMsgRemoveX509Cert(signer string, subject string, subjectKeyId string, serialNumber string) *MsgRemoveX509Cert {
+	return &MsgRemoveX509Cert{
+		Signer:       signer,
+		Subject:      subject,
+		SubjectKeyId: subjectKeyId,
+		SerialNumber: serialNumber,
+	}
+}
+
+func (msg *MsgRemoveX509Cert) Route() string {
+	return pkitypes.RouterKey
+}
+
+func (msg *MsgRemoveX509Cert) Type() string {
+	return TypeMsgRemoveX509Cert
+}
+
+func (msg *MsgRemoveX509Cert) GetSigners() []sdk.AccAddress {
+	signer, err := sdk.AccAddressFromBech32(msg.Signer)
+	if err != nil {
+		panic(err)
+	}
+	return []sdk.AccAddress{signer}
+}
+
+func (msg *MsgRemoveX509Cert) GetSignBytes() []byte {
+	bz := ModuleCdc.MustMarshalJSON(msg)
+
+	return sdk.MustSortJSON(bz)
+}
+
+func (msg *MsgRemoveX509Cert) ValidateBasic() error {
+	_, err := sdk.AccAddressFromBech32(msg.Signer)
+	if err != nil {
+		return sdkerrors.Wrapf(sdkerrors.ErrInvalidAddress, "invalid signer address (%s)", err)
+	}
+
+	err = validator.Validate(msg)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/x/pki/types/message_remove_x_509_cert_test.go b/x/pki/types/message_remove_x_509_cert_test.go
new file mode 100644
index 000000000..8b3fc65fd
--- /dev/null
+++ b/x/pki/types/message_remove_x_509_cert_test.go
@@ -0,0 +1,105 @@
+package types
+
+import (
+	"testing"
+
+	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
+	"github.com/stretchr/testify/require"
+	tmrand "github.com/tendermint/tendermint/libs/rand"
+
+	testconstants "github.com/zigbee-alliance/distributed-compliance-ledger/integration_tests/constants"
+	"github.com/zigbee-alliance/distributed-compliance-ledger/testutil/sample"
+	"github.com/zigbee-alliance/distributed-compliance-ledger/utils/validator"
+)
+
+func TestMsgRemoveX509Cert_ValidateBasic(t *testing.T) {
+	negativeTests := []struct {
+		name string
+		msg  MsgRemoveX509Cert
+		err  error
+	}{
+		{
+			name: "invalid address",
+			msg: MsgRemoveX509Cert{
+				Signer:       "invalid_address",
+				Subject:      testconstants.RootSubject,
+				SubjectKeyId: testconstants.RootSubjectKeyID,
+			},
+			err: sdkerrors.ErrInvalidAddress,
+		},
+		{
+			name: "empty subject",
+			msg: MsgRemoveX509Cert{
+				Signer:       sample.AccAddress(),
+				Subject:      "",
+				SubjectKeyId: testconstants.RootSubjectKeyID,
+			},
+			err: validator.ErrRequiredFieldMissing,
+		},
+		{
+			name: "empty SubjectKeyId",
+			msg: MsgRemoveX509Cert{
+				Signer:       sample.AccAddress(),
+				Subject:      testconstants.RootSubject,
+				SubjectKeyId: "",
+			},
+			err: validator.ErrRequiredFieldMissing,
+		},
+		{
+			name: "subject len > 1024 (1 KB)",
+			msg: MsgRemoveX509Cert{
+				Signer:       sample.AccAddress(),
+				Subject:      testconstants.RootSubject + tmrand.Str(1025-len(testconstants.RootSubject)),
+				SubjectKeyId: testconstants.RootSubjectKeyID,
+			},
+			err: validator.ErrFieldMaxLengthExceeded,
+		},
+		{
+			name: "subject key id len > 256",
+			msg: MsgRemoveX509Cert{
+				Signer:       sample.AccAddress(),
+				Subject:      testconstants.RootSubject,
+				SubjectKeyId: testconstants.RootSubjectKeyID + tmrand.Str(257-len(testconstants.RootSubjectKeyID)),
+			},
+			err: validator.ErrFieldMaxLengthExceeded,
+		},
+	}
+
+	positiveTests := []struct {
+		name string
+		msg  MsgRemoveX509Cert
+	}{
+		{
+			name: "valid remove x509cert msg",
+			msg: MsgRemoveX509Cert{
+				Signer:       sample.AccAddress(),
+				Subject:      testconstants.RootSubject,
+				SubjectKeyId: testconstants.RootSubjectKeyID,
+			},
+		},
+		{
+			name: "valid remove x509cert msg with serial number",
+			msg: MsgRemoveX509Cert{
+				Signer:       sample.AccAddress(),
+				Subject:      testconstants.RootSubject,
+				SubjectKeyId: testconstants.RootSubjectKeyID,
+				SerialNumber: testconstants.RootSerialNumber,
+			},
+		},
+	}
+
+	for _, tt := range negativeTests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := tt.msg.ValidateBasic()
+			require.Error(t, err)
+			require.ErrorIs(t, err, tt.err)
+		})
+	}
+
+	for _, tt := range positiveTests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := tt.msg.ValidateBasic()
+			require.NoError(t, err)
+		})
+	}
+}
diff --git a/x/pki/types/tx.pb.go b/x/pki/types/tx.pb.go
index 4812fdb4a..50f5af7d9 100644
--- a/x/pki/types/tx.pb.go
+++ b/x/pki/types/tx.pb.go
@@ -1365,6 +1365,110 @@ func (m *MsgAssignVidResponse) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_MsgAssignVidResponse proto.InternalMessageInfo
 
+type MsgRemoveX509Cert struct {
+	Signer       string `protobuf:"bytes,1,opt,name=signer,proto3" json:"signer,omitempty" validate:"required"`
+	Subject      string `protobuf:"bytes,2,opt,name=subject,proto3" json:"subject,omitempty" validate:"required,max=1024"`
+	SubjectKeyId string `protobuf:"bytes,3,opt,name=subjectKeyId,proto3" json:"subjectKeyId,omitempty" validate:"required,max=256"`
+	SerialNumber string `protobuf:"bytes,4,opt,name=serialNumber,proto3" json:"serialNumber,omitempty"`
+}
+
+func (m *MsgRemoveX509Cert) Reset()         { *m = MsgRemoveX509Cert{} }
+func (m *MsgRemoveX509Cert) String() string { return proto.CompactTextString(m) }
+func (*MsgRemoveX509Cert) ProtoMessage()    {}
+func (*MsgRemoveX509Cert) Descriptor() ([]byte, []int) {
+	return fileDescriptor_badfdb2b39855d16, []int{22}
+}
+func (m *MsgRemoveX509Cert) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *MsgRemoveX509Cert) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_MsgRemoveX509Cert.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *MsgRemoveX509Cert) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_MsgRemoveX509Cert.Merge(m, src)
+}
+func (m *MsgRemoveX509Cert) XXX_Size() int {
+	return m.Size()
+}
+func (m *MsgRemoveX509Cert) XXX_DiscardUnknown() {
+	xxx_messageInfo_MsgRemoveX509Cert.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_MsgRemoveX509Cert proto.InternalMessageInfo
+
+func (m *MsgRemoveX509Cert) GetSigner() string {
+	if m != nil {
+		return m.Signer
+	}
+	return ""
+}
+
+func (m *MsgRemoveX509Cert) GetSubject() string {
+	if m != nil {
+		return m.Subject
+	}
+	return ""
+}
+
+func (m *MsgRemoveX509Cert) GetSubjectKeyId() string {
+	if m != nil {
+		return m.SubjectKeyId
+	}
+	return ""
+}
+
+func (m *MsgRemoveX509Cert) GetSerialNumber() string {
+	if m != nil {
+		return m.SerialNumber
+	}
+	return ""
+}
+
+type MsgRemoveX509CertResponse struct {
+}
+
+func (m *MsgRemoveX509CertResponse) Reset()         { *m = MsgRemoveX509CertResponse{} }
+func (m *MsgRemoveX509CertResponse) String() string { return proto.CompactTextString(m) }
+func (*MsgRemoveX509CertResponse) ProtoMessage()    {}
+func (*MsgRemoveX509CertResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_badfdb2b39855d16, []int{23}
+}
+func (m *MsgRemoveX509CertResponse) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *MsgRemoveX509CertResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_MsgRemoveX509CertResponse.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *MsgRemoveX509CertResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_MsgRemoveX509CertResponse.Merge(m, src)
+}
+func (m *MsgRemoveX509CertResponse) XXX_Size() int {
+	return m.Size()
+}
+func (m *MsgRemoveX509CertResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_MsgRemoveX509CertResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_MsgRemoveX509CertResponse proto.InternalMessageInfo
+
 func init() {
 	proto.RegisterType((*MsgProposeAddX509RootCert)(nil), "zigbeealliance.distributedcomplianceledger.pki.MsgProposeAddX509RootCert")
 	proto.RegisterType((*MsgProposeAddX509RootCertResponse)(nil), "zigbeealliance.distributedcomplianceledger.pki.MsgProposeAddX509RootCertResponse")
@@ -1388,86 +1492,90 @@ func init() {
 	proto.RegisterType((*MsgDeletePkiRevocationDistributionPointResponse)(nil), "zigbeealliance.distributedcomplianceledger.pki.MsgDeletePkiRevocationDistributionPointResponse")
 	proto.RegisterType((*MsgAssignVid)(nil), "zigbeealliance.distributedcomplianceledger.pki.MsgAssignVid")
 	proto.RegisterType((*MsgAssignVidResponse)(nil), "zigbeealliance.distributedcomplianceledger.pki.MsgAssignVidResponse")
+	proto.RegisterType((*MsgRemoveX509Cert)(nil), "zigbeealliance.distributedcomplianceledger.pki.MsgRemoveX509Cert")
+	proto.RegisterType((*MsgRemoveX509CertResponse)(nil), "zigbeealliance.distributedcomplianceledger.pki.MsgRemoveX509CertResponse")
 }
 
 func init() { proto.RegisterFile("pki/tx.proto", fileDescriptor_badfdb2b39855d16) }
 
 var fileDescriptor_badfdb2b39855d16 = []byte{
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+	0xff, 0x0d, 0x00, 0x00, 0xff, 0xff, 0x8b, 0x0b, 0x81, 0x59, 0x61, 0x1b, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -1493,6 +1601,7 @@ type MsgClient interface {
 	UpdatePkiRevocationDistributionPoint(ctx context.Context, in *MsgUpdatePkiRevocationDistributionPoint, opts ...grpc.CallOption) (*MsgUpdatePkiRevocationDistributionPointResponse, error)
 	DeletePkiRevocationDistributionPoint(ctx context.Context, in *MsgDeletePkiRevocationDistributionPoint, opts ...grpc.CallOption) (*MsgDeletePkiRevocationDistributionPointResponse, error)
 	AssignVid(ctx context.Context, in *MsgAssignVid, opts ...grpc.CallOption) (*MsgAssignVidResponse, error)
+	RemoveX509Cert(ctx context.Context, in *MsgRemoveX509Cert, opts ...grpc.CallOption) (*MsgRemoveX509CertResponse, error)
 }
 
 type msgClient struct {
@@ -1602,6 +1711,15 @@ func (c *msgClient) AssignVid(ctx context.Context, in *MsgAssignVid, opts ...grp
 	return out, nil
 }
 
+func (c *msgClient) RemoveX509Cert(ctx context.Context, in *MsgRemoveX509Cert, opts ...grpc.CallOption) (*MsgRemoveX509CertResponse, error) {
+	out := new(MsgRemoveX509CertResponse)
+	err := c.cc.Invoke(ctx, "/zigbeealliance.distributedcomplianceledger.pki.Msg/RemoveX509Cert", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // MsgServer is the server API for Msg service.
 type MsgServer interface {
 	ProposeAddX509RootCert(context.Context, *MsgProposeAddX509RootCert) (*MsgProposeAddX509RootCertResponse, error)
@@ -1615,6 +1733,7 @@ type MsgServer interface {
 	UpdatePkiRevocationDistributionPoint(context.Context, *MsgUpdatePkiRevocationDistributionPoint) (*MsgUpdatePkiRevocationDistributionPointResponse, error)
 	DeletePkiRevocationDistributionPoint(context.Context, *MsgDeletePkiRevocationDistributionPoint) (*MsgDeletePkiRevocationDistributionPointResponse, error)
 	AssignVid(context.Context, *MsgAssignVid) (*MsgAssignVidResponse, error)
+	RemoveX509Cert(context.Context, *MsgRemoveX509Cert) (*MsgRemoveX509CertResponse, error)
 }
 
 // UnimplementedMsgServer can be embedded to have forward compatible implementations.
@@ -1654,6 +1773,9 @@ func (*UnimplementedMsgServer) DeletePkiRevocationDistributionPoint(ctx context.
 func (*UnimplementedMsgServer) AssignVid(ctx context.Context, req *MsgAssignVid) (*MsgAssignVidResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AssignVid not implemented")
 }
+func (*UnimplementedMsgServer) RemoveX509Cert(ctx context.Context, req *MsgRemoveX509Cert) (*MsgRemoveX509CertResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method RemoveX509Cert not implemented")
+}
 
 func RegisterMsgServer(s grpc1.Server, srv MsgServer) {
 	s.RegisterService(&_Msg_serviceDesc, srv)
@@ -1857,6 +1979,24 @@ func _Msg_AssignVid_Handler(srv interface{}, ctx context.Context, dec func(inter
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Msg_RemoveX509Cert_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(MsgRemoveX509Cert)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(MsgServer).RemoveX509Cert(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/zigbeealliance.distributedcomplianceledger.pki.Msg/RemoveX509Cert",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MsgServer).RemoveX509Cert(ctx, req.(*MsgRemoveX509Cert))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _Msg_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "zigbeealliance.distributedcomplianceledger.pki.Msg",
 	HandlerType: (*MsgServer)(nil),
@@ -1905,6 +2045,10 @@ var _Msg_serviceDesc = grpc.ServiceDesc{
 			MethodName: "AssignVid",
 			Handler:    _Msg_AssignVid_Handler,
 		},
+		{
+			MethodName: "RemoveX509Cert",
+			Handler:    _Msg_RemoveX509Cert_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "pki/tx.proto",
@@ -2845,6 +2989,80 @@ func (m *MsgAssignVidResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	return len(dAtA) - i, nil
 }
 
+func (m *MsgRemoveX509Cert) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *MsgRemoveX509Cert) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *MsgRemoveX509Cert) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.SerialNumber) > 0 {
+		i -= len(m.SerialNumber)
+		copy(dAtA[i:], m.SerialNumber)
+		i = encodeVarintTx(dAtA, i, uint64(len(m.SerialNumber)))
+		i--
+		dAtA[i] = 0x22
+	}
+	if len(m.SubjectKeyId) > 0 {
+		i -= len(m.SubjectKeyId)
+		copy(dAtA[i:], m.SubjectKeyId)
+		i = encodeVarintTx(dAtA, i, uint64(len(m.SubjectKeyId)))
+		i--
+		dAtA[i] = 0x1a
+	}
+	if len(m.Subject) > 0 {
+		i -= len(m.Subject)
+		copy(dAtA[i:], m.Subject)
+		i = encodeVarintTx(dAtA, i, uint64(len(m.Subject)))
+		i--
+		dAtA[i] = 0x12
+	}
+	if len(m.Signer) > 0 {
+		i -= len(m.Signer)
+		copy(dAtA[i:], m.Signer)
+		i = encodeVarintTx(dAtA, i, uint64(len(m.Signer)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func (m *MsgRemoveX509CertResponse) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *MsgRemoveX509CertResponse) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *MsgRemoveX509CertResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	return len(dAtA) - i, nil
+}
+
 func encodeVarintTx(dAtA []byte, offset int, v uint64) int {
 	offset -= sovTx(v)
 	base := offset
@@ -3299,6 +3517,40 @@ func (m *MsgAssignVidResponse) Size() (n int) {
 	return n
 }
 
+func (m *MsgRemoveX509Cert) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.Signer)
+	if l > 0 {
+		n += 1 + l + sovTx(uint64(l))
+	}
+	l = len(m.Subject)
+	if l > 0 {
+		n += 1 + l + sovTx(uint64(l))
+	}
+	l = len(m.SubjectKeyId)
+	if l > 0 {
+		n += 1 + l + sovTx(uint64(l))
+	}
+	l = len(m.SerialNumber)
+	if l > 0 {
+		n += 1 + l + sovTx(uint64(l))
+	}
+	return n
+}
+
+func (m *MsgRemoveX509CertResponse) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	return n
+}
+
 func sovTx(x uint64) (n int) {
 	return (math_bits.Len64(x|1) + 6) / 7
 }
@@ -6271,6 +6523,234 @@ func (m *MsgAssignVidResponse) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *MsgRemoveX509Cert) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowTx
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: MsgRemoveX509Cert: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: MsgRemoveX509Cert: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Signer", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Signer = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Subject", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Subject = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 3:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field SubjectKeyId", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.SubjectKeyId = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 4:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field SerialNumber", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.SerialNumber = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipTx(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthTx
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *MsgRemoveX509CertResponse) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowTx
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: MsgRemoveX509CertResponse: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: MsgRemoveX509CertResponse: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		default:
+			iNdEx = preIndex
+			skippy, err := skipTx(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthTx
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func skipTx(dAtA []byte) (n int, err error) {
 	l := len(dAtA)
 	iNdEx := 0