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Consider the following Approval Mapping
having the Allow issue creation/linking via partnership credentials turned ON
and associated to the following Partnership
The HQL Validator has been added on the Create transition of the workflow associated to the Destination Project and Issue Type.
Consider that user has privileges to create issue in the destination Project 'Process Management'.
Login as an user that is not the user applied as Partnership destination credential.
Click the JIRA Create button the Destination Project and Issue Type applied on the Approval Mapping.