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Turn the draft invoice into a finalized invoice.

put
https://app.pennylane.com/api/external/v2/customer_invoices//finalize

Convert the draft customer invoice or credit note into a finalized one. Once finalized, the resource can no longer be edited.

This endpoint requires the following scope: customer_invoices:all

Path Params
integer
required

The unique identifier of the customer invoice

Query Params
boolean
Defaults to true

If you are already using the X-Use-2026-API-Changes header, you can ignore this parameter.

The Pennylane API is introducing important changes, which will be rolled out in three phases: preview, sunset and cleanup.

For new user, please use this parameter with true value to opt in directly to the new version of the API.

Preview phase: From January 14th to April 7th 2026. Opt in by setting this attribute to true to test and migrate to the new behavior.

Sunset phase: From April 8th to June 30th 2026. The new behavior becomes the default. Set this attribute to false if you need additional time to migrate.

Cleanup phase: Starting July 1st 2026 The old behavior will no longer be available. You must have migrated by this point.

For more details, see our API documentation https://pennylane.readme.io/docs/2026-api-changes-guide for migration instructions.

Responses

Updated 23 days ago

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Updated 23 days ago