Invalid client credentials to get HPR access token

Sandbox Signup
#1

We are trying to get the access token using https://preprod.ndhm.gov.in/gateway/v0.5/sessions API but we are getting error as shown below:
{
“error”: {
“code”: 2500,
“message”: “INVALID_CREDENTIALS: Invalid client credentials”
}
}

@Ramandeep1 Please attach the required hpr role to our sandbox client:
Client ID: SBX_002007. That might be why it is not working.

Thanks a lot again!