BR-KSA-89
If exists, Target Currency Code (KSA-38) must be the same as the Tax currency code (BT-6)
error: the document is invalid
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.
Context
/ubl:Invoice/cac:TaxExchangeRate
Test
matches(normalize-space(//cbc:DocumentCurrencyCode), /ubl:Invoice/cac:TaxExchangeRate/cbc:TargetCurrencyCode) and (/ubl:Invoice/cac:TaxExchangeRate/cbc:TargetCurrencyCode !='')
Checked with Saudi Arabia ZATCA Tax Invoice (UBL), Saudi Arabia ZATCA Simplified Tax Invoice (UBL)