If you're looking for an invoice and can't find it in your Bills list, here are the most common reasons.
Invoices in pending payruns
Invoices included in a pending payrun are removed from the Bills list to prevent double payment. This is expected behaviour.
To find these invoices, go to Bills > Payments > Pending to see all invoices currently in pending payruns. From there, you can view the invoices, edit the payrun, or complete or decline the payment.
Making a partial payment on an invoice in a pending payrun
If you need to make a partial payment on an invoice that's already in a pending payrun, complete that payrun first. Once it's processed, the invoice will reappear in your Bills list with the remaining balance, and you can create a new payment for the rest.
For more details, see Pay part of an invoice.
Invoices filtered out of your Bills list
Apron keeps documents that don't look like bills to pay out of your Bills list, and someone on your team may have chosen to filter out everything from a contact. To check, select the archive icon at the top right of the list, find your invoice and choose Add to bills.
Also worth checking: If the invoice has already been paid, it will have moved to Bills > Payments > Paid.