Why are we receiving 'Forward(s) failed' message when trying to forward an incident?

Environment:

Message Templates, Emails

Issue:

When we try to foward an incident, we receive an error:

Forward(s) failed

Resolution:

This is likely because the Admin Forward Incident message template is not enabled. 

To resolve the error, navigate to Configuration > Site Configuration > Message Templates > Administrator Emails (Ribbon) > Expand the 'Incident' section and check the two boxes: 'Send' and 'HTML' near the 'Admin Forward Incident' template.

Next, ensure you are saving and deploying the changes: click the 'Save' button from the 'Ribbon', click the 'Deploy' link and 'Save' once again so the changes for the template will become live.