Issue with New Supplier Partner Match function within OBN

Summary:

Cannot use partner match function because it's only providing two options:

1) To connect through EBS which doesn't work since customer is on Fusion ERP Cloud or

2) To perform partner search through excel list upload but that isn't working and only allows to search one at a time

Can someone provide clear instructions on how to best perform a mass partner match with roughly 6,000+ suppliers?

Content (required):

Trying to perform a mass partner list match to quantify how many suppliers are currently registered in OBN.

Version (include the version you are using, if applicable):

23A

Code Snippet (add any code snippets that support your topic, if applicable):