Validation message
[BR-29]-If both Invoicing period start date (BT-73) and Invoicing period end date (BT-74) are given then the Invoicing period end date (BT-74) shall be later or equal to the Invoicing period start date (BT-73).
Context
cac:InvoicePeriod
//ram:ApplicableHeaderTradeSettlement/ram:BillingSpecifiedPeriod
UBL
XPath
CII
XPath
Used in business terms