---
title: Get the List of Updatable Passes
framework: walletpasses
role: symbol
role_heading: Web Service Endpoint
path: walletpasses/get-the-list-of-updatable-passes
---

# Get the List of Updatable Passes

Send the serial numbers for updated passes to a device.

## URL

GET https://yourpasshost.example.com/v1/devices/{deviceLibraryIdentifier}/registrations/{passTypeIdentifier}?passesUpdatedSince={previousLastUpdated}

## Path Parameters

deviceLibraryIdentifier: The unique identifier for the device. passTypeIdentifier: The pass type identifier of the pass to check for updates. This value corresponds to the value of the passTypeIdentifier key of the pass. previousLastUpdated: The value of the lastUpdated key from the SerialNumbers object returned in a previous request. This value limits the results of the current request to the passes updated since that previous request.

## Response Codes

200 Return Matching Passes: On success, the call returns an object that contains the serial numbers for the matching passes. 204 No Matching Passes: There are no matching passes.

## Mentioned in

Adding a Web Service to Update Passes

## See Also

### Pass updates

- [Adding a Web Service to Update Passes](walletpasses/adding-a-web-service-to-update-passes.md)
- [Register a Pass for Update Notifications](walletpasses/register-a-pass-for-update-notifications.md)
- [Send an Updated Pass](walletpasses/send-an-updated-pass.md)
- [Unregister a Pass for Update Notifications](walletpasses/unregister-a-pass-for-update-notifications.md)
- [Log a Message](walletpasses/log-a-message.md)
- [PushToken](walletpasses/pushtoken.md)
- [SerialNumbers](walletpasses/serialnumbers.md)
- [LogEntries](walletpasses/logentries.md)