Diagnosis
You have changed data in a customer field in an item. However, thisdata is read-only and cannot be changed.

System Response
The system does not accept your entries. The entries you made in theitem have no effect.

Procedure
Consult your SAP consultant.

Procedure for System Administration
In the customer exit, ensure that the fields in the item, in which datacan only be displayed and not changed, are not ready for input.