List customer invoices

GET https://app.pennylane.com/api/external/v2/customer_invoices

List customer invoices and credit notes

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Deprecated behavior

By default this endpoint only returns finalized customer invoices (excluding credit notes).
From may 15th 2025, by default, draft invoices and credit notes will also be included.
New filters draft and credit_note are available.

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This endpoint requires one of the following scopes: customer_invoices:all, customer_invoices:readonly