SAP Message AY067 - The field &1, table &2, field name &3 is modified - system error

Diagnosis You want to modify the field &V3& with the table name &V2& for fieldgroup table &V1&. However the field is already modified. This is asystem error. System Response Program error Procedure If you are using a standard SAP program, contact your systemadministrator. If you are a programmer calling up this function module, check thecall-up and your logic.