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Updating a pass changes it on every phone that has it. The holder keeps the same pass and doesn’t have to add it again.

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Change field values

Send only the fields that change to PATCH /v1/passes/{id}. Fields you leave out keep their values.
  • Use the field keys from the template, the same ones you send when issuing.
  • Send null or an empty string to clear an optional field. A required field can only be cleared if the template gives it a default value.
  • Only per-pass fields can be updated. Shared fields change when you edit the template.

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Notify the holder

By default an update is silent: the pass changes without an alert. Set notificationMode to notify to show a notification on the holder’s lock screen:
Google Wallet allows 3 notifications per pass in 24 hours. Beyond that, the pass still updates but no alert is shown.

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Delivery status

The response contains the updated pass and an update object. update.delivery reports how the change reached each wallet:

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Void a pass

To end a pass, such as a cancelled membership or a refunded ticket, void it. Voiding is permanent: the pass is marked as voided in the holder’s wallet and can’t be updated again.