SAP Message SIW087 - Structure &1 has no field definition

Diagnosis
The configuration had defined no fields for the structure object &1. Thestructure object is not consistent.

System Response
SIW aborts the object creation since the structure definition is notvalid.
The generation of the object is not possible.

Procedure
Define at least one field for the structure object description by usingthe SET
_METADATA_FOR_FIELDS method.