# ibr-005-ae

Source: https://xmlvalid.com/rules/ibr-005-ae

> Frequency of billing (BTAE-06) should be taken from the frequency of billing code list.

- Level: error
- Rule sets: PINT AE rules (United Arab Emirates) 1.0.4
- Context: `cac:InvoicePeriod/cbc:DescriptionCode`
- Test: `((not(contains(normalize-space(.), ' ')) and contains(' DLY WKY Q15 MTH Q45 Q60 QTR YRL HYR OTH ', concat(' ', normalize-space(.), ' '))))`

Validate a document against these rules: https://xmlvalid.com/validate