is there way to simulate AP invoice approval workflow (maybe eve any approval workflow)

Summary:

Researching how to test changes to AP approval workflow in Payables Cloud and was curious if i can simulate AP workflow approval from API call

Content (required):

Instead of manual test i can think of creating automated testing using set of API calls to create invoice and then submit all test invoices for approval.

But was curious if there is better way to simulate AP approval workflow process

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