Log in the History List
Logs a user-defined entry into the workflow history list.
Options for this action
Add the required message into the text box either manually or use Insert Reference to build the string dynamically at run time.
There is a maximum length of 255 characters in the history list entry. Additional text will be trimmed.
For details on the SharePoint History List, please refer to the SharePoint Help Pages.
Troubleshooting
Action not executing
The work load for this action is added to a job queue. The workflow executes jobs in the queue as a batch when it reaches a "commit" point.