Seeking advice on best way for bulk reversal of accounting of invoices

Summary:

We have a requirement to reverse the accounting of about 1000 invoices in the system. We were looking for a way to do this in bulk. We have tried the REST API method, using Postman. But it is giving an error. Requesting help on either resolving the error or suggestions on better ways to to achieve this. Thanks in advance for any help that can be given :)

Content (please ensure you mask any confidential information):

Below is the method we tried in Postman, via REST API

on POST ran the below:

/fscmRestApi/resources/11.13.18.05/invoices/action/reverseDistributions

Body :

        {

            "InvoiceNumber": "<<Invoice_num>>",