diff --git a/embedded/openapi/spec3.beta.sdk.json b/embedded/openapi/spec3.beta.sdk.json
index 4dff8297..04966e9a 100644
--- a/embedded/openapi/spec3.beta.sdk.json
+++ b/embedded/openapi/spec3.beta.sdk.json
@@ -41817,7 +41817,17 @@
       },
       "payment_method_details_affirm": {
         "description": "",
-        "properties": {},
+        "properties": {
+          "transaction_id": {
+            "description": "The Affirm transaction ID associated with this payment.",
+            "maxLength": 5000,
+            "nullable": true,
+            "type": "string"
+          }
+        },
+        "required": [
+          "transaction_id"
+        ],
         "title": "payment_method_details_affirm",
         "type": "object",
         "x-expandableFields": []
diff --git a/embedded/openapi/spec3.json b/embedded/openapi/spec3.json
index 421f6262..a156ccb0 100644
--- a/embedded/openapi/spec3.json
+++ b/embedded/openapi/spec3.json
@@ -29662,7 +29662,14 @@
       },
       "payment_method_details_affirm": {
         "description": "",
-        "properties": {},
+        "properties": {
+          "transaction_id": {
+            "description": "The Affirm transaction ID associated with this payment.",
+            "maxLength": 5000,
+            "nullable": true,
+            "type": "string"
+          }
+        },
         "title": "payment_method_details_affirm",
         "type": "object",
         "x-expandableFields": []