# BR-KSA-60

Source: https://xmlvalid.com/rules/BR-KSA-60

> Cryptographic stamp (KSA-15) must exist in simplified tax invoices and associated credit notes and debit notes (KSA-2, position 1 and 2 = 02).

- Level: warning
- Rule sets: ZATCA e-invoicing rules (Saudi Arabia) SDK 3.4.6
- Context: `cbc:InvoiceTypeCode[substring(@name, 1, 2) = '02']`
- Test: `exists(//cac:Signature) and (//cac:Signature) != ''`

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