There was a problem saving your refresh schedule. Please try again later.

This is a great question, and it’s something many Power BI users encounter when scheduling refreshes, even with Premium capacity. The error message you shared usually points to a configuration, service, or gateway issue rather than a licensing problem.

1. Verify service and tenant status
   Check Power BI Service Status (https://support.fabric.microsoft.com/en-us/status) to make sure there are no outages or issues in the US Central region (as indicated by your cluster URI).
2. Validate credentials
   
   * Go to Settings → Data source credentials for your dataset.

   * Re-enter or refresh credentials for all sources, even if they appear current — expired tokens or subtle permission changes often trigger this error.

3. Check gateway setup
   

   If you are using an On-premises Data Gateway, make sure:

   * The gateway is online and up-to-date.

   * Data source mappings are correct.

   * No pending gateway updates or expired service accounts.

4. Look for refresh conflicts
   

   Even with Premium:

   * Ensure no other refresh job is running on the same dataset.

   * Avoid overlapping or parallel refresh schedules.

   * Test by temporarily removing one refresh slot and re-adding it.

5. Test the dataset locally
   

   Open the report in Power BI Desktop:

   * Run a manual refresh.

   * Check for schema changes, renamed/deleted columns, or permission issues that could block scheduled refresh.

6. Use your error details
   With your Activity ID and Request ID, open a case with Microsoft Support (https://support.fabric.microsoft.com/). These IDs will help them trace the backend logs for a precise cause.
   
   
7. Quick workaround
   

   If the issue persists:

   * Delete the refresh schedule.

   * Re-publish the dataset.

   * Create a new refresh schedule to reset the configuration.

I hope it will help.