After successful installation, you need to verify and potentially adjust your Jira instance configuration to avoid errors during the execution of JMWE post-functions. Most of the configuration required to run the JMWE add-on is done automatically, but if you have customized Jira security settings such as Permission Schemes or Issue Security schemes, you might have to make some additional manual changes.
Identifying configuration issues
If you have already configured JMWE post-functions in your workflows and they do not seem to be working appropriately, head for the Troubleshooting and Support page inside your Jira instance, wait a few seconds, and check whether an error box appears mentioning Security Errors.
Create at least one JIRA Project
In order for the JMWE add-on to work properly, you need to have created your first Jira Project. If you haven't, most configuration pages will not work, and you will see security-errors in your logs.
1 - Check your Global permissions
Verify that the atlassian-addons-admin group has the Jira Administrators permission.
2 - Check your Permission schemes
For each permission scheme, make sure all permissions are granted to the atlassian-addons-project-access project role in the Permission Scheme of the project.
3 - Check your Issue Security schemes
For each Issue Security scheme, make sure that the atlassian-addons-project-access project role belongs to every Security Level.
4 - If you are using jira.permission.* workflow step properties
You need to add the atlassian-addons-project-access project role to the jira.permission.* property value