# Marking a bill as already paid
source: https://developer.mastercard.com/bill-pay-experience-design-guide/documentation/design/marking-a-bill-as-already-paid/index.md
Although uncommon, it is possible for an account holder to pay a bill enrolled in Bill Pay by other means. For example, an account holder could pay a bill at a physical store location, via mail or by other means outside of Bill Pay.
Perhaps this payment is made spur-of-the-moment out of convenience. However, it could be a planned payment by the account holder if the service provider, merchant or utility does not accept a specific payment method or charges fees associated with certain credit or debit cards.
With any platform such as Bill Pay, there will be some usage limitations. If you can allow for these rare cases and keep the account holder as a Bill Pay consumer, it can be a win-win situation. You retain the account holder, who wants to maintain a Bill Pay account as a means to manage a record of payments in addition to paying some of their bills, and you keep them engaged with the platform.
Another thing to keep in mind is that all bills paid through Bill Pay receive a payment reference number. However, bills paid outside of Bill Pay do not receive a payment reference number but can be recorded in the account holder's bill history for their personal records.
### UX Journeys: Marking a bill as already paid {#ux-journeys-marking-a-bill-as-already-paid}
For the best viewing experience of the UX journey, click the **full screen mode** option or **zoom** using the controls located on the right.
To view the prototype and specs for this experience, visit Figma [here](https://www.figma.com/file/jamxCat034ufU4bA438fp1/BPX-Prototypes?node-id=6101%3A115188&t=f3aQxNrCWfAnT7np-1&fuid=1128325947710363067). Password: **BPXMC2022**
Note: **Mastercard Bill Pay APIs used in this experience**
* [Link retrieval](https://developer.mastercard.com/bill-pay-for-dsps/documentation/use-cases/request-to-link/link-retrieval/)
Next: [Enrolling in e-billing after adding a new bill](https://developer.mastercard.com/bill-pay-experience-design-guide/documentation/design/enrolling-in-e-billing-later/index.md)