Add Serial Numbers to Outbound Delivery (customer order)

Hello there!

I'm looking to pull serial numbers for serialized inventory from a table then populate them into picked/packed customer outbound deliveries via a function module or BAPI. I have been experiementing with a couple of FM's and was hoping someone could recommend a FM a provide some sample code.

Some the the FM's ..

SERNR_ADD_TO_LS

SERNR_ADD_TO_DOCUMENT

SERNR_MAINTAIN_IN_DOCUMENT

Thanks!