The users role was modified (privileges added/removed), but the customer is still not able to perform an operation (
No access rights granted to method), or vise-a-versa able, while should not according to the changed role. If BA is restarted (or after some significant amount of time) the role starts to work as expected.
Some of the BA privileges are cached. The issue is considered to be the bug with id #PBA-66503 ("Sometimes BA restart is required to update user privileges").
Restart BA for the changes to be applied.