OSP Maintenance flow without Outside Processing BPA

Summary:

Can we have OSP Maintenance Work Order fulfilled without having Outside Processing BPA?

Content (required):

Our client have Maintenance processes which have operations completed by vendors. We will be setting up OSP Maintenance flow for this.

But can we have this flow set up without having Outside Processing BPA created against those suppliers in Procurement?

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

23C

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