Changing code on iPad 5th gen with iPadOS 16.7.10

If this is a code that the game itself is asking for, you need to contact the developer of the game for assistance. Otherwise you need to explain in more detail what this "code" is and where exactly you're being asked for it.

Regards.

Can you be a little more specific as to what is meant by, “some code” ?

There are quite a few “code-like” items on an iPad and we don’t want to steer you in the wrong direction.