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Change scenario

In cases where a trigger/action/search’s custom code needs to be rewritten or a new v2 is replacing an older v1.

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Impact to users

Deleting a trigger/action/search in a new version is a breaking change - which would prevent migration of your users to the new version. Updating an existing trigger/action/search’s custom code would allow for migration but break users’ Zaps if the output changes.

The triggers, actions, and searches are identified by their key, such as new_contact or create_post, so if you remove that key from the app’s definition, or change it (possible in CLI apps only), this message appears when you attempt to migrate.

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Best practices

  • If you have already renamed the key (possible in CLI apps only) for a trigger/action/search, you’ll need to switch it back to the previous key to proceed with migrating users.
  • If you need to remove a trigger/action/search, change its visibility to hidden instead. Use the Visibility Options dropdown in the UI, or the hidden key in the CLI.

Migrated Zaps that used the hidden trigger/action/search will now show it as Deprecated in the Zap editor, but will continue to function as long as the endpoints remain valid.

Once a user selects a different trigger/action/search when editing their Zap, they will not be able to retrieve the hidden one. New users will not see any hidden trigger/action/search as available for selection.

  • If you need to add a new trigger/action/search that replaces the hidden one, create a duplicate and give it a new key (such as appending _v2 on the end), and keep the Name and Description the same if the functionality for a user is the same.

  • This way existing Zaps continue to work once migrated with the previous (and now hidden) definition, and new Zaps will only be able to select the new definition.

  • In cases where the endpoint in the hidden trigger/action/search will be sunset and begin to return errors in the future, the impact to users would be as follows:

Once the API has been sunset, active Zaps (turned on) using the impacted trigger/action/search will produce errors when they run. Depending on user’s email notification settings, owners of these Zaps will be sent email notifications about these errors.

If those Zaps exceed the error ratio and users have not overridden related settings in their Zaps, those Zaps will be automatically turned off.

  • If you’d like to add custom errors within Zapier for the hidden trigger/action/search at the time of the endpoint sunset, you could consider the following:

Create a new version of the integration that immediately throws a z.errors.Error exception in the perform method of the impacted trigger/action/search. Learn more for apps maintained in the UI or the CLI.

Promote and then migrate users to this new version as close to the sunset date as possible.

The benefits of this approach are:

  • Throwing an explicit exception will ensure impacted Zaps will hit the error ratio (and be turned off) at the earliest possible time.
  • You can add a user-friendly message to the exception that users will see in both Zaps Runs on the Zap History and also in email error notifications, e.g. This function has been deprecated and is no longer available.
  • Here’s an example of how a custom error message would be displayed on an action in the Zap History:

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