Copy UDF from PO Line to AP Invoice when entering AP Bill from PO

Hi @lnd74,

Adding to @darylbowman suggestions.

You can also override the CreateAPInvoice method and add the RowInserting event handler for APTran DAC like below copy the custom fields,

 public class POOrderEntry_Extension : PXGraphExtension<PX.Objects.PO.POOrderEntry>
    {
        #region Event Handlers
        public delegate IEnumerable CreateAPInvoiceDelegate(PXAdapter adapter);
        [PXOverride]
        public IEnumerable CreateAPInvoice(PXAdapter adapter, CreateAPInvoiceDelegate baseMethod)
        {
            PXGraph.InstanceCreated.AddHandler<APInvoiceEntry>((invoiceEntryGraph) =>
            {
                invoiceEntryGraph.RowInserting.AddHandler<APTran>((sender, e) =>
                {
                    APTran apTran = (APTran)e.Row;
                    APTranExt apTranExt = apTran.GetExtension<APTranExt>();
                    POLine poLine = PXSelect<POLine, Where<POLine.orderType, Equal<Required<APTran.pOOrderType>>,
                        And<POLine.orderNbr, Equal<Required<APTran.pONbr>>,
                        And<POLine.lineNbr, Equal<Required<APTran.pOLineNbr>>>>>>.Select(Base, apTran.POOrderType, apTran.PONbr, apTran.POLineNbr);
                    if (poLine != null)
                    {
                        POLineExt poLineExt = poLine.GetExtension<POLineExt>();
                        apTranExt.UsrPortID = poLineExt.UsrPortID;
                    }
                });
            }
            );
            return baseMethod(adapter);
        }
        #endregion
    }

Feel free to post back if you have any questions. Happy coding.!