Description of problem: On INT registration, the kinds of resource add-ons can not be downgraded. Version-Release number of selected component (if applicable): How reproducible: 100% Steps to Reproduce: 1. Log in INT registration with an account who has subscribed online-int before. 2. Upgrade the memory add-on to 4Gi. 3. Downgrade the memory add-on to 2Gi. 4. Reapeat for the other two resources, storage and terminating memory Actual results: 3&4: Downgrading the memory,storage and terminating memory failed with the error message: Unable to generate preview invoice. No plan changes have been made. Please try again and contact Red Hat if the problem persists. Expected results: Downgrade the resource add-ons successfully. Additional info:
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