Issue Summary

Users are not able to delete portal-only customers or revoke access from their sandbox instance. 

Steps to Reproduce

1. A sandbox should be created if it does not exist already.
2. In the sandbox instance Go to User management -> Jira Service Management -> Portal customers, you will see that portal-only customers have been copied from the production site.
   NOTE: Portal-only customers should not be copied Manage product sandboxes.
   
3. Click on the 3 dots for any of the customers to select Revoke access or Delete account. 

Expected Results

The portal-only customers should be deleted from the sandbox instance or permissions should be revoked. 

Actual Results

The portal-only customer are not being deleted or their permission is not being revoked, the following error can be found in dev console.

{ "errorKey": "bad-request-format", "errorDetail": { "message": "Request validation failed: Parameter (accountId) does not match required pattern: ^qm:[a-zA-Z0-9-]+:[a-zA-Z0-9-]+$", "paramName": "accountId", "path": "paths->/directory/{directoryId}/user/{accountId}->parameters->1" } }  

Workaround

Currently, there is no known workaround for this behavior. A workaround will be added here when available