diff --git a/errors/v1/msg.proto b/errors/v1/msg.proto
index cb5fd8c..bfa12f1 100644
--- a/errors/v1/msg.proto
+++ b/errors/v1/msg.proto
@@ -51,6 +51,7 @@ enum ErrCode {
   BANK_INFO_NOT_FOUND = 3007;
   RECIPIENT_NOT_FOUND = 3008;
   USER_NOT_FOUND = 3009;
+  INVALID_REFERRAL_CODE = 3011;
   MARKET_AGREEMENT_ALREADY_ACCEPTED = 3010;
 
   // Resource state errors