Official text
For credit notes ((BT-3) has the value of 381) and debit notes ((BT-3) has the value of 383), the billing reference ID (BT-25) is mandatory.Warning · Source: ZATCA E-Invoicing SDK 238-R3.3.8 · Electronic Invoice XML Implementation Standard v1.2, 19 May 2023, §13.3.1, p. 57 · Checked: 26 October 2026
What it means
A credit note (381) or debit note (383) must point to the number of the original invoice it adjusts, in BillingReference.
When it happens
- A refund without a receipt, and the system sends the note with no reference.
- The field is present but empty.
How to fix it
- Look up the original invoice by its number or in the sales history before the refund.
- Write its number in BillingReference/InvoiceDocumentReference/ID.
- If the refund covers several invoices, add one reference for each.
Example
<cac:BillingReference>
<cac:InvoiceDocumentReference>
<cbc:ID></cbc:ID>
</cac:InvoiceDocumentReference>
</cac:BillingReference><cac:BillingReference>
<cac:InvoiceDocumentReference>
<cbc:ID>654321</cbc:ID>
</cac:InvoiceDocumentReference>
</cac:BillingReference>We ran the wrong example through ZATCA's SDK 238-R3.3.8 on 26 October 2026 and it raised BR-KSA-56, along with BR-55, BR-KSA-F-06-C22. The example is an excerpt of ZATCA's sample Simplified/Credit/Credit Note of a Simplified Tax Invoice.xml with one change; the sample without it does not raise the code.
Related codes
- BR-KSA-17 Credit or debit note reason is missing
- BR-KSA-F-04 Negative amount or quantity
- BR-KSA-52 The line VAT amount (KSA-11) is mandatory for tax invoice and associated credit notes and debit notes (KSA-2, position 1 and 2 = 01).
Terms on this page
Frequently asked questions
What does BR-KSA-56 mean?
A credit note (381) or debit note (383) must point to the number of the original invoice it adjusts, in BillingReference.
Is the invoice rejected when BR-KSA-56 appears?
A warning: the invoice is accepted with a note; fix the cause in the next invoices. This is its severity in ZATCA's SDK 238-R3.3.8.
How do I fix BR-KSA-56?
1. Look up the original invoice by its number or in the sales history before the refund. 2. Write its number in BillingReference/InvoiceDocumentReference/ID. 3. If the refund covers several invoices, add one reference for each.
Last updated: 26 October 2026 · What we don't do · Methodology · Correct us · Changelog
First published 2026-10-26 · Archived copy
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