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Error codes/E-Invoicing (EInvoiceAPI)

HTTP 400E-Invoicing (EInvoiceAPI)

UNSUPPORTED_FORMAT

Invoice format not supported.

Remediation

How to fix

Supported formats: UBL 2.1, CII D16B, Factur-X, XRechnung, FatturaPA

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Email [email protected] with the request_id from the API response. We retain request metadata server-side (based on your plan's retention window) and can look up the error context.

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