Summary

An automation rule is reporting Some Errors when ran. The error in the automation audit log is:

The role has 50 or more users, only the first 50 users will be used.

Environment

Jira Cloud

Diagnosis

Check that the amount of users listed in a project role totals fewer than 50 users. If there are any users or groups listed as default project role members (located at https://site-name.atlassian.net/secure/project/ViewProjectRoles.jspa), they can also be factored into this count. 

Cause

An automation rule can only reference a role that contains 50 users or fewer.

Solution

Reference Jira user groups instead of users or project roles in the automation rule. A note appears under the Criteria field displaying the role limit when a project role is referenced (see below).

Additional Information:

User condition not properly checked when a project role has more than 50 default members: AUTO-1066 - Getting issue details... STATUS