How to get the custom field which approval list is based on?

JSM Development JSM Server
1

I am trying to retrieve the customfield which the list of approver is based on so that I could modify the custom field value to re-populate the approval list but I check both EAP-4.0 and 3.x API there isn’t any method to retrieve the customfield.

Using ApprovalService, I am able to get the

  • list of approval
  • list of approver
    but I could not get the custom field which the list of approver is based on for a particular approval.

I understand the customfield’s ID is stored in AO_56464C_APPROVER.VALUE and I will be able to retrieve the custom field ID with the approval’s ID but is there any better way to access it via Atlassian Java API / REST?