I tried setting two numberlist items with the same key, idea is that if SRC is 111 change it to 222 and if SRC is 444 change it to 555, but it does not allow duplicate keys, is there a way to achieve this?
It is not clear what idea of creating numberlist items with same key. If you want different rewrite rules depends on SRC - you have to use source numberlist + different items per src.