# BR-KSA-F-06-C3

Source: https://xmlvalid.com/rules/BR-KSA-F-06-C3

> Field character limits for Purchase order ID field (BT-13) have not been met. The maximum limit is 127 characters.

- Level: warning
- Rule sets: ZATCA e-invoicing rules (Saudi Arabia) SDK 3.4.6
- Context: `/ubl:Invoice | /cn:CreditNote`
- Test: `exists(cac:OrderReference/cbc:ID) and string-length(cac:OrderReference/cbc:ID) > 127`

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