diff --git a/db/seeds/ama_affinity_cases.rb b/db/seeds/ama_affinity_cases.rb
index cbd48b21a86..386fc875efd 100644
--- a/db/seeds/ama_affinity_cases.rb
+++ b/db/seeds/ama_affinity_cases.rb
@@ -30,11 +30,13 @@ def initial_file_number_and_participant_id
     def create_veteran
       @file_number += 1
       @participant_id += 1
-      create(
-        :veteran,
-        file_number: format("%<n>09d", n: @file_number),
-        participant_id: format("%<n>09d", n: @participant_id)
-      )
+      unless Veteran.exists?(participant_id: @participant_id)
+        create(
+          :veteran,
+          file_number: format("%<n>09d", n: @file_number),
+          participant_id: format("%<n>09d", n: @participant_id)
+        )
+      end
     end
 
     def create_cavc_affinity_cases
diff --git a/db/seeds/demo_aod_hearing_case_lever_test_data.rb b/db/seeds/demo_aod_hearing_case_lever_test_data.rb
index 8056e32a2b3..e5d5f039cbc 100644
--- a/db/seeds/demo_aod_hearing_case_lever_test_data.rb
+++ b/db/seeds/demo_aod_hearing_case_lever_test_data.rb
@@ -171,7 +171,10 @@ def create_veteran(options = {})
         file_number: format("%<n>09d", n: options[:file_number]),
         participant_id: format("%<n>09d", n: options[:participant_id])
       }
-      create(:veteran, params.merge(options))
+
+      unless Veteran.exists?(participant_id: params[:participant_id])
+        create(:veteran, params.merge(options))
+      end
     end
 
     # Appeal Creation Functions
diff --git a/db/seeds/demo_non_aod_hearing_case_lever_test_data.rb b/db/seeds/demo_non_aod_hearing_case_lever_test_data.rb
index 196a54b4f3e..a60f882d728 100644
--- a/db/seeds/demo_non_aod_hearing_case_lever_test_data.rb
+++ b/db/seeds/demo_non_aod_hearing_case_lever_test_data.rb
@@ -177,7 +177,9 @@ def create_veteran(options = {})
         file_number: format("%<n>09d", n: options[:file_number]),
         participant_id: format("%<n>09d", n: options[:participant_id])
       }
-      create(:veteran, params.merge(options))
+      unless Veteran.exists?(participant_id: params[:participant_id])
+        create(:veteran, params.merge(options))
+      end
     end
 
     # Appeal Creation Functions