# Manage Apple Pass Certificates

Manage your Apple Wallet certificates.

## Requirements

To integrate Apple Wallet with your account, you need:

* An Apple Pass Type Certificate
* The certificate password

If you do not yet have them, complete the steps in the Airship Support article
[How to make an Apple Pass Type Certificate](https://support.airship.com/hc/en-us/articles/213493683-How-to-make-an-Apple-Pass-Type-Certificate-for-Mobile-Wallet). If you need to renew a certificate, select your *existing* Pass Type ID instead of creating a new one.

> **Warning:** Changing the Pass Type ID for the certificate used on your project will
> make it impossible to edit passes generated with the old certificate. For
> this reason, you should ensure you have uploaded a valid certificate before
> you begin making passes.



## Add a New Certificate to your Airship Wallet project {#add-a-new-certificate}

Upload a new certificate to the project.

1. Go to *Settings » Certificates*.
1. Select *Upload a new .p12*.
1. Enter the *Certificate password*.
1. Click **Choose File** and select your p12 file.
1. Click **Save**.

Repeat these steps to add another certificate.

## Select an Existing Certificate

Designate which previously uploaded certificate should be used with the project.

1. Go to *Settings » Certificates*.
1. Select *Select an existing .p12*.
1. Select from the Certificate menu.
1. Click **Save**.

You may change the project's certificate as often as needed.

> **Warning:** If you have created any passes for a project and then change the
>    certificate, you will be unable to interact with or update those passes.
>    The certificate authorization will fail on those passes and they will be in
>    an orphaned state.


## Replace Certificate

Use *Replace certificate* when you need to upload a new certificate to your
project, typically to replace an expiring certificate. The new certificate is
validated upon upload to verify it has the same basename and Team ID as the
original. If it is not a valid replacement, you are given the option to add it
as a new certificate.

1. Go to *Settings » Certificates*.
1. Click **Replace certificate**.
1. Select *Upload a new .p12*.
1. Enter the *Certificate password*.
1. Click **Choose File** and select your p12 file.
1. Click **Save**.