Where to see pending write off approval workflow

Summary:

Looking for why user is selecting approval on write off, but still shows as pending

Content (required):

User had several AR write offs to approval. All approved but 1, it's still showing as pending, even though approval was selected. Where do you go to find the workflow that might give some indication why write off is not approving?

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

21C 11.13.21.07.0

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