---
title: "Class ID"
url: https://getstell.com/glossary/class-id
description: "The identifier of a Google Wallet class, the shared template every pass object in a program is built on."
---

# Class ID

A class ID identifies a Google Wallet class: the shared template that defines a program's passes on the Google side. The class carries what every member's pass has in common, layout, branding, program name, the program-level configuration, and each individual pass is an object that references the class and adds the member's own data on top.

The ID itself is two parts joined by a dot: the [issuer ID](/glossary/issuer-id) of the account that owns the class, then a suffix the issuer chooses. That prefix is not cosmetic; it is what roots the class in an account and makes ownership of a program's Google Wallet presence concrete and checkable.

The split between class and object is where the model earns its keep. Fix a logo or reword a program detail on the class, and every pass built on it updates, no per-member writes required. Change a member's balance, and only their object is touched. It is the same division of labor as a template and its passes elsewhere, made explicit in the API. One caveat worth knowing: a class edit updates existing passes, but what a member sees can lag until their wallet refreshes.

Functionally, the class sits where Apple's [pass type identifier](/glossary/pass-type-identifier) plus the pass template sit on the other platform, one more place where the two wallets do the same job with different vocabulary. A member never sees a class ID; they meet the class only as the pass a [save link](/glossary/save-link) puts in their wallet.