diff --git a/go/vt/vterrors/code.go b/go/vt/vterrors/code.go
index e095bb4e885..9bfb7747c09 100644
--- a/go/vt/vterrors/code.go
+++ b/go/vt/vterrors/code.go
@@ -48,6 +48,7 @@ var (
 	VT03023 = errorWithoutState("VT03023", vtrpcpb.Code_INVALID_ARGUMENT, "INSERT not supported when targeting a key range: %s", "When targeting a range of shards, Vitess does not know which shard to send the INSERT to.")
 	VT03024 = errorWithoutState("VT03024", vtrpcpb.Code_INVALID_ARGUMENT, "'%s' user defined variable does not exists", "The query cannot be prepared using the user defined variable as it does not exists for this session.")
 	VT03025 = errorWithState("VT03025", vtrpcpb.Code_INVALID_ARGUMENT, WrongArguments, "Incorrect arguments to %s", "The execute statement have wrong number of arguments")
+	VT03026 = errorWithoutState("VT03024", vtrpcpb.Code_INVALID_ARGUMENT, "'%s' bind variable does not exists", "The query cannot be executed as missing the bind variable.")
 
 	VT05001 = errorWithState("VT05001", vtrpcpb.Code_NOT_FOUND, DbDropExists, "cannot drop database '%s'; database does not exists", "The given database does not exist; Vitess cannot drop it.")
 	VT05002 = errorWithState("VT05002", vtrpcpb.Code_NOT_FOUND, BadDb, "cannot alter database '%s'; unknown database", "The given database does not exist; Vitess cannot alter it.")
@@ -121,6 +122,7 @@ var (
 		VT03023,
 		VT03024,
 		VT03025,
+		VT03026,
 		VT05001,
 		VT05002,
 		VT05003,
diff --git a/go/vt/vtgate/engine/insert.go b/go/vt/vtgate/engine/insert.go
index cbe2dfc9eb8..c3021cb46a0 100644
--- a/go/vt/vtgate/engine/insert.go
+++ b/go/vt/vtgate/engine/insert.go
@@ -766,12 +766,19 @@ func (ins *Insert) getInsertShardedRoute(
 			if keyspaceIDs[index] != nil {
 				mids = append(mids, sqlparser.String(ins.Mid[index]))
 				for _, expr := range ins.Mid[index] {
-					_ = sqlparser.Walk(func(node sqlparser.SQLNode) (kontinue bool, err error) {
+					err = sqlparser.Walk(func(node sqlparser.SQLNode) (kontinue bool, err error) {
 						if arg, ok := node.(*sqlparser.Argument); ok {
-							shardBindVars[arg.Name] = bindVars[arg.Name]
+							bv, exists := bindVars[arg.Name]
+							if !exists {
+								return false, vterrors.VT03026(arg.Name)
+							}
+							shardBindVars[arg.Name] = bv
 						}
 						return true, nil
 					}, expr, nil)
+					if err != nil {
+						return nil, nil, err
+					}
 				}
 			}
 		}