You cannot edit PFM characteristics

What causes this issue?

The PFM rules are already maintained in transaction <AB>FSH_PFM</>. The
system does not allow you to edit the characteristics.

System Response

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

How to fix this error?

Call transaction <AB>FSH_PFM</>.
Delete the PFM rules with the PFM characteristics that you want to
delete.
Edit the PFM characteristics in the Customizing activity <LS>Maintain
Preference Management Characteristics</> under <LS>Logistics General >
SAP Fashion Management > Preferential Management</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.