Overview:
Document message tokens are special bits of text that are replaced at the time the message is used. Token ${taskDecisionComments} can be used within the email content to display the information for the related workflow: all participant names, task names, verdicts, completion dates, and comments such as the screenshot below. However, it is not working as expected.
Expected:

Result:

Root Cause:
This is probably caused by a missing additional setup in a notification step of a workflow.
Solution:
- Navigate to the notification step of the workflow: Admin --> Configuration --> Document Lifecycles -->[Target Lifecycle] --> Workflows --> [Target Workflow] --> [Target Notification step].
- Select Show decision/comments from previous tasks in notification detail.
- Select one or more target previous tasks for drop down Display decision and comments from.
Thank you