REST API Issues - Batch, Open Batch - SR Support Scope

Summary:

There are issues in REST API executions for Batch and Open Batch and SR says out of support scope. Please clarify

Content (please ensure you mask any confidential information):

We are using a EPM REST API for batch execution and the POST call provides only partial response (GET) for the data load rules under it (example: when 6 rules are available in open batch folder it provides response job id's only for 3) when executed through any medium (EPM groovy, Azure calls, POSTMAN etc.). SR response for this is 'out of support scope'. There are no customizations here and we are using "Running Batch Rules REST API" AS IS from EPM documentation.