General error in di when add delivery

Hi,

I'm using DI API and when i add a delivery associated to sales order, the SAP throws "General Error" and i can't make the delivery.

The error appear when I associate the dellivery to sales order, if i not associate the dellivery to sales order

the delivery is added.

delivery.Lines.BaseEntry = sales_entry '1

delivery.Lines.BaseType = 17 'bodt_Sales_Order

delivery.Lines.BaseLine = sales_line '0

Any sugestion?