Postings for fee flows after nominal change have already been made

What causes this issue?

The fee flows after a nominal change (increase/decrease) in this company
code have already been posted. For this reason, you cannot perform a
nominal change.

System Response

The system does not allow you to perform a nominal change.

How to fix this error?

Create a new transaction or perform the corresponding reversal to
eliminate any errors that may have occurred during the presentation
change of this transaction.

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.