What it means
The settlement section (ApplicableHeaderTradeSettlement) should not contain a NextInvoiceDateTime, the date and time when the next invoice in a series is due to be issued.
Why it matters
This is a warning, so the file is still accepted. EN 16931 has no field for the date of a following invoice, so receiving software normally ignores it. A buyer who expects it will not see it.
How to fix it
Remove the next invoice date from the file. If you want the buyer to know when the next invoice in a recurring series will follow, mention it in an invoice note (BT-22). Check the recurring invoice settings in your invoicing software, since that is where this date usually comes from. Fixing it is optional and mainly keeps the check clean.
The rule as published
NextInvoiceDateTime 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 |
Check your file
Drop your e-invoice to see whether CII-SR-347 still fails, and which other rules do.