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BR-30

If both Invoice line period start date (BT-134) and Invoice line period end date (BT-135) are given then the Invoice line period end date (BT-135) shall be later or equal to the Invoice line period start date (BT-134).

error: the document is invalid Peppol documentation ↗

What the rule checks

As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.

EN 16931 rules (UBL) 1.3.17 EN 16931 rules 1.3.16 (UBL) 1.3.16 EXTENDED-CTC-FR rules (UBL) 1.4.0.04 Romanian RO e-Factura rules (UBL) 1.0.9
Context
cac:InvoiceLine/cac:InvoicePeriod | cac:CreditNoteLine/cac:InvoicePeriod
Test
(exists(cbc:EndDate) and exists(cbc:StartDate) and xs:date(cbc:EndDate) >= xs:date(cbc:StartDate)) or not(exists(cbc:StartDate)) or not(exists(cbc:EndDate))

Checked with EN 16931 Invoice (UBL), EN 16931 Credit Note (UBL), Croatia eRačun Invoice (UBL), Croatia eRačun Credit Note (UBL)

EN 16931 rules (CII) 1.3.17 EN 16931 rules 1.3.16 (CII) 1.3.16 EXTENDED-CTC-FR rules (CII) 1.4.0.04 Factur-X EN 16931 rules 1.09.2 Factur-X EXTENDED rules 1.09.2
Context
//ram:SpecifiedLineTradeSettlement/ram:BillingSpecifiedPeriod
Test
(ram:EndDateTime/udt:DateTimeString[@format = '102']) >= (ram:StartDateTime/udt:DateTimeString[@format = '102']) or not (ram:EndDateTime) or not (ram:StartDateTime)

Checked with EN 16931 Invoice (CII)