SAP Message VL157 - Error when locking DOCUMENTATION NOTES DiagnosisDuring the preparation of available requirements per plant for amaterial, a lock error error occurred.System ResponseINCLUDE 'NA_NO_EXECUTION' OBJECT DOKU ID TX LANGUAGE EProcedureINCLUDE 'NA_SYSAD1' OBJECT DOKU ID TX LANGUAGE E 408949Quantity delivered inconsistent after locking error