SAP Message SIW088 - Structure &2: Fieldname &1 is invalid

Diagnosis
The configuration of the structure object &v2& is inconsistent, becausethe FIELDNAME &v1& is invalid.

System Response
The generation of structure object &v2& is not possible.

Procedure
Correct the configuration of &v2& structure field description. Ensurethat the FIELDNAME is uppercase and not longer than 30 characters.