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Warning

CII-SR-297: Do not add an order response reference

In short

Warning: worth checking.

CII-SR-297 means the invoice refers to an order response (OrderResponseReferencedDocument), which EN 16931 does not use. It is only a warning, so the file is still accepted; remove the reference to clear it.

On this page

What it means

The check looks in the agreement part of the invoice header for a reference to an order response (ram:OrderResponseReferencedDocument), the seller's reply that confirms or changes an order. EN 16931 has no field for it. The order itself is referenced with the purchase order number (BT-13) and the sales order reference (BT-14).

Why it matters

This is a warning, so the invoice is still accepted. A recipient that follows the standard does not read the order response reference, so it plays no part in matching the invoice to the order. It is worth fixing if you want a file with no warnings, or if the buyer needs the confirmation number.

How to fix it

Remove the order confirmation reference from the invoice in your invoicing software, or from the export settings that send it. In the XML, delete the ram:OrderResponseReferencedDocument block. Keep the purchase order number and, if you have one, your sales order reference. If the buyer needs the confirmation number, add it to the invoice note.

The rule as published

OrderResponseReferencedDocument should not be present

Where this rule applies

Rule set Version
EN 16931 (CII) 1.3.17
XRechnung 3.0 (CII) 3.0.2
NLCIUS (CII) 1.0.3.13
France CTC (CII) 1.4.0-04
Rule text from phive-rules 4.6.4.

Check your file

Drop your e-invoice to see whether CII-SR-297 still fails, and which other rules do.

Updated 6 November 2026