When the schedule integration fails, an email is sent to the approver, and the workflow action changes to Continue Approve.
To troubleshoot failed schedule integration:
Navigate to the Links tab of the Workflow form view.
Inspect the schedule integration process logs and focus on the log associated with the specific step number where the error occurred.
The file name for this log will resemble something like: Step 1 - ScheduleIntegration – 0 Errors 4 Warnings.
After addressing the errors, you can click Continue Approve to re-run the integration. If you need to make changes to the schedule before running the integration, reject the workflow back to the modeling session and approve it there.