OE_ORDER_PUB.PROCESS_LINE API through WebAdi

Hello I built a WEBADI to load sales order lines, built a procedure that internally calls the API "OE_ORDER_PUB.PROCESS_LINE" API that returns me a successful upload result (X_RETURN_STATUS = 'S') and the line is charged to order . But the WwbAdi loading screen I return error and the message column shows "Default values have not been defined for this country".

You know how to tell the webadi that the charge is correct (as a concurrent error_code field which tells you (0) successful (1) warning (2) error)

regards