Deactivation/activation of BAdI implementation & is not allowed

What causes this issue?

The BAdI implementations for the BAdI definition BADI_LAYER control the
sort behavior of other BAdI definitions at runtime.
In addition, the other BAdI definition must be specified as the filter
value of the current BAdI implementation.
The sort behavior was defined using the Customizing functions in SE18
for the BAdI definitions of the current filter values. Therefore, the
respective BAdI implementation cannot be changed directly because
otherwise data inconsistency would occur.

System Response

Activation or deactivation of the current implementation cannot be
executed.

How to fix this error?

If you wish to change the sort behavior of one of the filter values (=
BAdI definitions), do this using SE18, menu "Utilities -> Sorting".

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.