We highly appreciate the steps and information you've shared, Stephanie T76.

On behalf of the Community, we sincerely thank you for letting us know that you've discovered a solution regarding including the Reference No. when printing the Bill Payment Summary. The details you've provided will indeed help other QuickBooks users here in the Community.

Moreover, I'll also share this article that you can use if you want to print or make specific changes in your checks: Create, modify, and print checks in QuickBooks Desktop.

Feel free to share any information in this thread or Community, Stephanie T76. We're always available whenever you need us.