Finding the reference number attached to the online app fee payment

Add the Payment Details related list to the Contact Page Layout:

1. Navigate to Setup and search for Object Manager.
2. Click the Contact (Student) object.
3. Click Page Layouts.
4. Click the Contact (Student) Layout.
5. In the Page Layout palette, click Related Lists.
6. Drag the Payment Details related list onto the Page Layout.
7. In the Payment Details related list, click on the Properties (wrench) icon.
8. From the Available Fields list, select the appropriate Reference field that you want to display.
9. Click Add, then Ok.