OM Extension - Default Supplier Site

Summary:

Need to default Supplier Site on the Order Header/Lines.

As per documentation - can find only SupplierSiteIdentifier field that could be used for the extension mapping.

The problem however is the Supplier SIte id in DOO_FULFILL_LINES_ALL does not seem to be same as Vendor_site_id in POZ_SUPPLIER_SITES_ALL_M.

Can anyone advise which DB field this Supplier Site id maps to and how can it be derived on the OM Extension ? Or are there any other attributes like Supplier Site Code that can be used here?

Content (required):

The problem however is the Supplier SIte id in DOO_FULFILL_LINES_ALL does not seem to be same as Vendor_site_id in POZ_SUPPLIER_SITES_ALL_M.