Doris2.1.5调整表冷数据分区副本数失败，如何处理？

Doris版本：2.1.5
表分区已变成冷数据存储到oss上，我这边变想把本地副本调整成2，此时操作报错，如何将本地tablet变成2副本？
报错：Cannot cancel storage policy for partition which is already on code storage.

SHOW TABLETS FROM ad_link.huan_ad_link_direct_log partitions(p20241004);

ALTER TABLE ad_link.huan_ad_link_direct_log modify partition(p20241004) set ("replication_num" = "2");