diff --git a/packages/hoppscotch-backend/src/errors.ts b/packages/hoppscotch-backend/src/errors.ts
index 794a06db5..e856fdc01 100644
--- a/packages/hoppscotch-backend/src/errors.ts
+++ b/packages/hoppscotch-backend/src/errors.ts
@@ -155,6 +155,23 @@ export const TEAM_ENVIRONMMENT_NOT_FOUND =
 export const TEAM_ENVIRONMENT_NOT_TEAM_MEMBER =
   'team_environment/not_team_member' as const;
 
+/*
+
+/**
+ * User history not found
+ * (UserHistoryService)
+ */
+export const USER_HISTORY_NOT_FOUND = 'user_history/history_not_found' as const;
+
+/*
+
+/**
+ * Invalid Request Type in History
+ * (UserHistoryService)
+ */
+export const USER_HISTORY_INVALID_REQ_TYPE =
+  'user_history/req_type_invalid' as const;
+
 /*
 
  |------------------------------------|