Add a default category for Supplier Content Map set

Summary: Add a default category for Supplier Content Map(SCM) set

Content (required):

For the Punchout configurations, we add the category and UNSPSC code mapping in SCM set. There might be a possibility of adding new codes at Supplier end which Business may not be aware. In order to handle such transactions, we need to add a default category which will be used on Punchout requisition if the UNSPSC code is not matching(catch all situation).

What value can be added in External Category in SCM set so that the default category is populated in case of no match to UNSPSC code