JobStatus.MassUpdate doesn't update Job when run from Epicor Function or REST call

[Jonathan]

Check below thread, you basically need to have 2 rows when updating, the original one and the updated one.

Logic works in BL Tester, but not BPM Code (Mass Shipment)

Try putting this before the second call to UpdateMaster var biTTShipHead = BufferCopy.Copy<Erp.Tablesets.ShipHeadRow>(ds.ShipHead[0]); biTTShipHead.RowMod = “”; ds.ShipHead.Add(biTTShipHead); The BO is updating the PackNum on the second UpdateMaster because the unmodified row is not present on the tableset, so it considers the row a new one.