MuleSoft Error "There is another policy applied with the same provided characteristics" while Applying Policies

With Mule gateway policies, the reason to receive the error "There is another policy applied with the same provided characteristics" when trying to apply a rate-limiting SLA-based policy having the Client ID Enforcement applied, is that the Rate Limiting SLA policy already enforces internally the usage of client application credentials.

For further information, review the Client ID Enforcement Policy.

SOLUTION

If you want to combine both policies' usage, remove the Client ID Enforcement and add only the Rate Limiting SLA policy from your application.