diff --git a/errors/v1/msg.proto b/errors/v1/msg.proto
index 775497b..b073f94 100644
--- a/errors/v1/msg.proto
+++ b/errors/v1/msg.proto
@@ -83,6 +83,7 @@ enum ErrCode {
   MARKET_ORDER_CANCELED = 7023;
   MARKET_ORDER_FAILED = 7024;
   MARKET_ORDER_UNKNOWN = 7025;
+  MARKET_ORDER_UNSUPPORTED_PARTICIPANT_TYPE = 7045;
   ASSET_CAN_NOT_BUY = 7026;
   ASSET_BUY_PRICE_IS_ZERO = 7019;
   MARKET_ORDER_MATCHING_ERR_REFUND = 7128;