Diagnosis
You have changed the product category, The product category definesnumerous subsequent processes. For example, the product category isused to determine the target system that the subsequent document (suchas a purchase order) is to be created in.

System Response
The system has tried to use the new product category to determinedependent data from your user master record or your organizational unit(such as the document type for the subsequent document).
The system has established that not all the attributes required areavailable and further processing with the new product category wouldlead to subsequent errors.
The system has therefore reset the product category to the old value.

Procedure
Contact your system administrator, since your user attribute settingsare not consistent. For all the product categories assigned to you, allthe subsequent attributes must also be set.