Hi @Alan_Kings,
To gain access to the Integration test environment you will need to complete the integration test environment registration form. See 2.21 Integration testing, which is part of Stage 2 - Build in the integration process documentation.
On the form you will specify the the ID of the Application you have setup and this allows the e-RS Partners Team to configured it appropriately.
@nhserspartners FYI.
Regards,
Adam.