Hi Shailaja,
assign the role -
AuthGroup.IntegrationDeveloper
to your user so that you don't get the 403 Forbidden error
===========
e.g.,
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https://cloudintegration.hana.ondemand.com/PI/help
> Operating SAP HCI
> User Management for SAP HCI
> Managing Users and Roles Assignments
> Defining Authorizations
Regards
Kenny