The type comes from the InvoiceTypeCode in your XML — you never pass it
separately.
| Code | Document | Profile |
|---|---|---|
380 | Invoice | Peppol BIS Billing 3.0 |
381 | Credit note | Peppol BIS Billing 3.0 |
389 | Self-billed invoice | Peppol BIS Self-Billing 3.0 |
261 | Self-billed credit note | Peppol BIS Self-Billing 3.0 |