I have been importing PO lines however recently started getting error in importing PO lines via data management in PU33
Installed product version : 10.0.9 (10.0.383.20005)
Installed platform version : Update33 (7.0.5559.41422)
getting error as below
Results. update not allowed for field 'PurchPurchaseOrderLineV2Entity.PurchaseOrderNumber'