Error creating AUTH token using POSTMAN

trying to create AUTH token using POSTMAN.

POST URL: https://dev.ndhm.gov.in/gateway/v0.5/sessions
Credentials:
{
“clientId”:“SIPLT_508288”,
“clientSecret”:“7be49610-cb77-47b1-b23b-81450978e160”
}
response:

<title>Request Rejected</title>
The requested URL was rejected. Please consult with your
administrator.<br><br>Your support ID is: 17886775468908391881<br><br><a href='javascript:history.back();'>[Go

    Back]</a></body>

Hey @SoftLinkTestUser ,

The issue is at another end and is under loop, we will let you know once it is resolved.

Thank You