Allocate serial and batch items in drop ship warehouse

Hi,

I have created a Drop-Ship warehouse with Manage Serial Numbers and Batches.

Next, I create an A/R Invoice document for an Item managed by Serial Numbers.
I am unable to Add the invoice as the serial number is not selected.

In addition, I am unable to create the serial number from the A/R Invoice or Serial Number Management.

How do I proceed to allocate the serial number in the A/R Invoice and Add the invoice?

I am using SAP B1 9.3 PL11.

Regards,

chingsean