When resizing an Aura instance via the API , and via PATCH /instance/<instanceID> you may see an error similar to the one below:

 

Error message: Status: 400
Message: {"errors":[{"message":"Downsizing an instance not allowed to minimise performance degradation.","reason":"resize-not-allowed"}]}"

 

This is expected behaviour when attempting to downsize an Aura instance. We only allow downsizing by one size at a time, in order to avoid Out Of Memory (OOM) errors caused by downsizing to an instance size that is too small.

For example:

4GB -> 2GB is a valid downsize operation.

8GB -> 2GB is not a valid downsize operation and will result in the above error.

 

If you have any queries around this, please raise a ticket with our Support Team