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Warning

CII-SR-261: Keep only the number in the buyer contact's telephone entry

In short

Warning: worth checking.

CII-SR-261 means the buyer contact's telephone entry contains a URIID element, which EN 16931 does not use there. Keep the phone number in the number element and remove the URIID. It is only a warning, so the file is still accepted.

On this page

What it means

In the buyer contact's telephone entry, the URIID element must be absent. The telephone number (BT-57) belongs in the CompleteNumber element. URIID is used for the email address (BT-58), in its own email entry. The same restriction applies in the CII rules for XRechnung, NLCIUS and the French CTC rules.

Why it matters

This is a warning, so the file is still accepted. The recipient's software reads the phone number from CompleteNumber, so a value placed in URIID is ignored. If the phone number is only in URIID, the buyer will not see it.

How to fix it

Check that the contact's phone number is filled in on the customer record in the phone field, not in a website or link field. Then switch off any option that writes a link into the telephone entry. If you edit the XML yourself, move the number into CompleteNumber and delete URIID inside TelephoneUniversalCommunication.

The rule as published

URIID 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-261 still fails, and which other rules do.

Updated 6 November 2026