SAP Message R7B299 - Characteristic &1: Master data access class does not deliver long text

Diagnosis
The characteristic &V1& has a separate master data access class with the
name &V2&. Characteristic &V1& has the property 'Long Text Exists'.However, the system cannot provide a long text using the &V2& masterdata access class.

System Response
The system cannot display the specified text property at query runtime.

Procedure
Choose another text property that corresponds to the capabilities of theV2 master data access class.