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 SeasonCode element, a code that names a season.
Why it matters
EN 16931 describes a period by its dates alone, so a file with a season code inside the period does not meet the standard. It fails and is rejected.
How to fix it
Delete the SeasonCode element from BillingSpecifiedPeriod and keep the start and end dates. If the season matters to the buyer, say so in an invoice note. If your invoicing software keeps adding the code, check its e-invoice export settings for an EN 16931 profile, or ask its supplier.
The rule as published
SeasonCode 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-075 still fails, and which other rules do.
Related rules
- 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
- CII-DT-081 An invoicing period must not contain a purpose code