Calling APIs Failed Due to Permission Issues

Symptom

When an IAM user attempts to call FRS, they may receive a message indicating that they have not subscribed to the service, despite having already done so.

Solution

• Make sure that the region used to call the API matches the region where the service is subscribed to.
• Check the permissions granted by the master account and confirm if the IAM user who subscribed to the service is the same as the one calling the API.