SAP Message R7597 - Characteristic &1: Value &2 is not valid

Diagnosis
Characteristic &V2& should be used as a default value or constant forcharacteristic &V1&.

System Response
The value &V2& is, however, not contained in the master data table forcharacteristic &V1&.

Procedure
You can display the permitted characteristic values using input help.
This is merely a warning. Processing can proceed.