# HppBillLookupSecondFactor

A model the API reference uses in a request or a response. The operation pages link every field typed as this model here.

The second value a payer types beside the bill number on a page with bill lookup on, and the
value the biller's record must match before the page shows anything about the bill.

## Values

| Value | Description |
| --- | --- |
| `PostalCode` | The billing postal code on the bill. Compared on letters and digits only, ignoring case. |
| `Email` | The email address the bill was sent to. Compared ignoring case. |

## See also

- [All documentation](https://devportal.signapay-sbx.winkpg.io/llms.txt): the machine-readable index of every public page on this site.