ASL with Deferred status Bulk upload

Summary

Need to create Approved supplier list with Deferred status in Bulk

Content

I have a specific requirement from client, Our structure is one business unit with multiple inventory organization. Supplier has single site. Some of the supplier specific to inventory organizations and they are not allowed(restrict) to purchase with other organizations. In ASL make them as a 'Deferred' status of all the categories with the organization combination helps to restrict them in the purchase order level. My question - They are many suppliers + organization combinations and i don't see a option to upload in a bulk rather than manual update. Is there any other way to upload in a bulk, anybody