How To Set Allow Completion Flag And Proceed With Transaction Completion

Summary: I am trying to use the functionality - Manage Control of Transaction Completion and I have the trx source and type defined, but my question is on the REST API.

Note 22B - How To Set Allow Completion Flag And Proceed With Transaction Completion (Doc ID 2878823.1) states:

Use below REST API to mark transaction as Allow Complete.

https:///fscmRestApi/resources/11.13.18.05/receivablesInvoices/{CustomerTransactionId}

Sample Payload -
{
"AllowCompletion": "Y"

Is this something that can be used in a custom scheduled process? Or is this only called from an API?

Looking for a way to have the approving USER complete the invoices that need review.