Issue Summary

The Automation "Assign work item" action (Specify user) excludes Atlassian service accounts from its user picker, even when those accounts can be assigned to work items manually. Service accounts that hold the Assignable User permission should be selectable as automation assignees.

Environment

• Product: [Jira / Jira Service Management]

• Site setup:
  • Cloud instance using Atlassian service accounts as standing assignees
  • Service accounts granted the "Assignable User" permission via the project's permission scheme

Current Behaviour and Use Case

Teams use dedicated Atlassian service accounts as the standing assignee for work items routed by automation (e.g. security exceptions or vulnerability triage queues). These service accounts:

• Are valid, active accounts on the site, and
• Can be assigned to work items manually (they appear in the normal issue assignee picker and hold the Assignable User permission).

However, when configuring an automation rule with the "Assign work item" action (or Edit work item -> Assignee) using the Specify user option, the picker excludes Atlassian service accounts.

Cause: the picker calls JiraUserClient.findAssignableUsers, which defaults userAccountTypes to ['atlassian','customer']. Because service accounts are not of type atlassian or customer, they are filtered out of the results.

As a result, a service account that is fully assignable manually cannot be selected as the target user in the automation assignee picker, so teams cannot build a straightforward "auto-assign to service account" rule through the UI.

Requested Feature

Align the Automation assignee resolution with manual assignment by including Atlassian service accounts that hold the Assignable User permission for the target project, rather than filtering them out.

Workaround

Currently, the only available workaround is to use smart values:

1. Bypass the picker by setting the assignee via the account ID in an advanced / JSON field edit, e.g.:

   { "fields": { "assignee": { "accountId": "SERVICE_ACCOUNT_ACCOUNT_ID" } } }