What it means
The invoicing period (BG-14), or the period on a line (BG-26), sits in BillingSpecifiedPeriod and may hold only a start date and an end date. This rule checks that there is no OpenIndicator element, a yes or no flag that marks the period as open.
Why it matters
EN 16931 describes a period by its dates alone, so a file with an extra flag inside the period does not meet the standard. It fails and is rejected.
How to fix it
Delete the OpenIndicator element from BillingSpecifiedPeriod. Give the start date and, if you know it, the end date as plain dates. If your invoicing software keeps adding the flag, check its e-invoice export settings for an EN 16931 profile, or ask its supplier.
The rule as published
OpenIndicator shall not be used. 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-DT-074 still fails, and which other rules do.
Related rules
- CII-DT-075 Leave the season code out of the invoicing period
- CII-DT-076 Leave the identifier out of the invoicing period
- CII-DT-077 Leave the name out of the invoicing period
- CII-DT-078 Leave the sequence number out of the invoicing period
- CII-DT-079 Leave the start date flexibility code out of the invoicing period
- CII-DT-080 Leave the continuous flag out of the invoicing period