diff --git a/types/result_code.go b/types/result_code.go
index c266aac0..64f832ee 100644
--- a/types/result_code.go
+++ b/types/result_code.go
@@ -117,7 +117,8 @@ const (
 	// Invalid namespace.
 	INVALID_NAMESPACE ResultCode = 20
 
-	// Bin name length greater than 14 characters.
+	// Bin name length greater than 14 characters,
+	// or maximum number of unique bin names are exceeded.
 	BIN_NAME_TOO_LONG ResultCode = 21
 
 	// Operation not allowed at this time.
@@ -373,7 +374,7 @@ func ResultCodeToString(resultCode ResultCode) string {
 		return "Namespace not found"
 
 	case BIN_NAME_TOO_LONG:
-		return "Bin name length greater than 14 characters"
+		return "Bin name length greater than 14 characters, or maximum number of unique bin names are exceeded"
 
 	case FAIL_FORBIDDEN:
 		return "Operation not allowed at this time"