I've created a duplicate of the Service Request with Approvals called Service Request with Service Owner Approval which has the exact same workflow with the exception of the approver required at the approvals stage of the workflow.
The approver configuration I've set requires 1 approver from the Affected services approver group.
I've run a test using the default change management request type and when selecting this group the appropriate approvers are listed so I've safely ruled out this being an issue with the approvers group.
On the request type the user must select the affected services.
This information is successfully copied across to the request ticket.
The problem is that the approvers are not being automatically listed as approvers on the ticket in Jira. Instead I am still receiving a prompt to assign an approver.
Is what I'm trying to achieve not possible or is there a bug in my workflow?
Thanks to @Rex Y_ for the answer to this one:
Based on the information that you've provided, the reason why there's no approvers on your request type is because you've set the Approver source as Affected services > Approver groups and the Approver groups field is not set on your issue screen which in turn needs to be configured on your Issue view of the request type Request Additional Access.
Essentially, you need to Issue Scheme and add Approver Groups to the request type.