Re: SAP B1: How to create a delivery with BOM items and serials numbers

lines.SerialNumbers.InternalSerialNumber= "test07";

            lines.SerialNumbers.Quantity = 1;

            lines.SerialNumbers.Add();

            lines.SerialNumbers.InternalSerialNumber= "test08";

            lines.SerialNumbers.Quantity = 1;

---------- here

lines.SerialNumbers.Add().

I believe u missed Add() function here since u have total total two S/N allocation lines.

Frank