# FX-SCH-A-000168

Source: https://xmlvalid.com/rules/FX-SCH-A-000168

> Element 'ram:URIID' must occur exactly 1 times.

- Level: error
- Rule sets: Factur-X BASIC WL rules 1.09, Factur-X BASIC rules 1.09, Factur-X EN 16931 rules 1.09.2, Factur-X EXTENDED rules 1.09.2
- Context: `/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeAgreement/ram:BuyerTradeParty/ram:URIUniversalCommunication`
- Test: `count(ram:URIID)=1`

> Element 'ram:URIID' must occur exactly 1 times.

- Level: error
- Rule sets: Factur-X BASIC rules 1.09
- Context: `/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeAgreement/ram:SellerTradeParty/ram:URIUniversalCommunication`
- Test: `count(ram:URIID)=1`

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