Dispute Management - FB15 calling FB1D bypassing Security authorization Obj

Hi all,

We are implementing ECC 6.0 ith Dispute Management, we were told that users having access to FB15 shouldn't have access to FB1D.

Now, even when users do NOT have access to FB1D in any authorization object, when they execute FB15, this transaction calls FB1D directly from the program allowing users to clear items (FB1D) with not matching amounts.

Have any of you seen this issue before?, how can we prevent users to get into FB1D while working with FB15?

Before modifying a program I want to know if there is something else we can do by using standard security.

Thanks in advance for any help

Juan Carlos