# CII-SR-472

Source: https://xmlvalid.com/rules/CII-SR-472

> CategoryTradeTax shall occur at most once in a Specified Trade Allowance Charge.

- Level: error
- Rule sets: EN 16931 rules (CII) 1.3.17
- Context: `//ram:SpecifiedTradeAllowanceCharge`
- Test: `count(ram:CategoryTradeTax) <= 1`

> Each Specified Trade Allowance Charge (BG-20)(BG-21) should contain a VAT rate (BT-96).

- Level: error
- Rule sets: EN 16931 rules 1.3.16 (CII), EXTENDED-CTC-FR rules (CII) 1.4.0.04
- Context: `//ram:SpecifiedTradeAllowanceCharge`
- Test: `count(ram:CategoryTradeTax) <= 1`

> Each Specified Trade Allowance Charge (BG-20)(BG-21) should contain a VAT rate (BT-96).

- Level: error
- Rule sets: Factur-X BASIC WL rules 1.09, Factur-X EN 16931 rules 1.09.2, Factur-X EXTENDED rules 1.09.2
- Context: `//ram:SpecifiedTradeAllowanceCharge`
- Test: `count(ram:RateApplicablePercent) <= 1`

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