Hello :)
I am trying to create a PO using GP dynamic web Service. I found that the tax amount is zero (TAXAMNT field in both pop10100 and pop10110).
I tried to set the tax amount for each purchase line separately but the total tax amount for the header is zero and not calculated automatically.
For example:
PurchaseOrderLine.TaxAmount = new MoneyAmount();
PurchaseOrderLine.TaxAmount.Value = 0.22M;
PurchaseOrderLine.TaxAmount.Currency = "CAD";