Unable to create Receivables Credit Memo Invoice using REST API

Summary:

Unable to create Receivables Credit Memo Invoice using REST API. Document followed: https://docs.oracle.com/en/cloud/saas/financials/23c/farfa/op-receivablescreditmemos-post.html

I am getting 400 BAD request without proper error detail on submitting the POST request.

I'm not able to identify what is wrong with the payload as the error message doesn't specify which field is giving the issue

API: /fscmRestApi/resources/11.13.18.05/receivablesCreditMemos

Content (required):

After doing some research on the Payload we found that the issue is because of the CustomerTransactionId value which we are passing in the payload. There is already a transaction with the same CustomerTransactionId because of that the API has errored out.