diff --git a/launchpad/errors.gno b/launchpad/errors.gno
index 826ab550b..d65b9395d 100644
--- a/launchpad/errors.gno
+++ b/launchpad/errors.gno
@@ -7,22 +7,19 @@ import (
 )
 
 var (
-	errNoPermission      = errors.New("[GNOSWAP-LAUNCHPAD-001] caller has no permission")
-	errNotRegistered     = errors.New("[GNOSWAP-LAUNCHPAD-002] not registered token")
-	errAlreadyRegistered = errors.New("[GNOSWAP-LAUNCHPAD-003] already registered token")
-	errLocked            = errors.New("[GNOSWAP-LAUNCHPAD-004] can't transfer token while locked")
-	errInvalidAddress    = errors.New("[GNOSWAP-LAUNCHPAD-005] invalid address")
-	errDataNotFound      = errors.New("[GNOSWAP-LAUNCHPAD-006] requested data not found")
-	errActiveProject     = errors.New("[GNOSWAP-LAUNCHPAD-007] project is active")
-	errInactiveProject   = errors.New("[GNOSWAP-LAUNCHPAD-008] project is inactive")
-	errInactiveTier      = errors.New("[GNOSWAP-LAUNCHPAD-009] pool is inactive")
-	errInvalidInput      = errors.New("[GNOSWAP-LAUNCHPAD-010] invalid input data")
-	errDuplicateProject  = errors.New("[GNOSWAP-LAUNCHPAD-011] can not create same project in same block")
-	errInvalidTier       = errors.New("[GNOSWAP-LAUNCHPAD-012] invalid pool")
-	errInvalidTierRatio  = errors.New("[GNOSWAP-LAUNCHPAD-013] invalid pool ratio")
-	errPastStartTime     = errors.New("[GNOSWAP-LAUNCHPAD-014] can not start from past time")
-	errNotEnoughBalance  = errors.New("[GNOSWAP-LAUNCHPAD-015] not enough balance")
-	errAlreadyRefunded   = errors.New("[GNOSWAP-LAUNCHPAD-016] already refunded")
+	errNoLeftReward     = errors.New("[GNOSWAP-LAUNCHPAD-001] no left reward")
+	errInvalidAddress   = errors.New("[GNOSWAP-LAUNCHPAD-002] invalid address")
+	errDataNotFound     = errors.New("[GNOSWAP-LAUNCHPAD-003] requested data not found")
+	errActiveProject    = errors.New("[GNOSWAP-LAUNCHPAD-004] project is active")
+	errInactiveProject  = errors.New("[GNOSWAP-LAUNCHPAD-005] project is inactive")
+	errInactiveTier     = errors.New("[GNOSWAP-LAUNCHPAD-006] pool is inactive")
+	errInvalidInput     = errors.New("[GNOSWAP-LAUNCHPAD-007] invalid input data")
+	errDuplicateProject = errors.New("[GNOSWAP-LAUNCHPAD-008] can not create same project in same block")
+	errInvalidTier      = errors.New("[GNOSWAP-LAUNCHPAD-009] invalid pool")
+	errInvalidTierRatio = errors.New("[GNOSWAP-LAUNCHPAD-010] invalid pool ratio")
+	errPastStartTime    = errors.New("[GNOSWAP-LAUNCHPAD-011] can not start from past time")
+	errNotEnoughBalance = errors.New("[GNOSWAP-LAUNCHPAD-012] not enough balance")
+	errAlreadyRefunded  = errors.New("[GNOSWAP-LAUNCHPAD-013] already refunded")
 )
 
 func addDetailToError(err error, detail string) string {