CII-SR-04:SupplyChainTradeTransaction required
CII must have main trade transaction element.
Engine Classification
Financial or legal field · Modification blocked by policy
Reason: CII documents require the SupplyChainTradeTransaction element as the main transaction container. This fundamental CII structure must be implemented in your document generator.
What is CII-SR-04?
CII-SR-04 is a fatal validation rule defined in the cii-d16b specification. It validates the rsm:SupplyChainTradeTransaction element under rsm:CrossIndustryInvoice in the UBL invoice XML.
When this rule fires, the invoice is non-compliant and will be rejected by Peppol access points and national validation services. The sending system receives a rejection response and the invoice does not reach the buyer.
Target path: XPath: /rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction
Why This Error Matters
Main CII content container.
CII-SR-04 is a hard failure. Invoices that trigger this rule are rejected at the access point and never reach the recipient. In Peppol networks, this means your sending system receives an MLR (Message Level Response) with a rejection status. The invoice must be corrected and re-sent, adding delay to your payment cycle.
Validator Behavior
- ·Causes invoice rejection
- ·Fails CII schema validation
- ·Error returned: CII-SR-04
- ·Specification: cii-d16b
How to Fix It
Add transaction
SupplyChainTradeTransaction container
Include children
ApplicableHeaderTradeAgreement, etc.
XML Example
Generic example based on the rule's target XPath. Your actual XML structure may differ.
<!-- Triggers validation error --> <rsm:SupplyChainTradeTransaction></rsm:SupplyChainTradeTransaction>
<!-- Corrected --> <rsm:SupplyChainTradeTransaction>VALID_VALUE</rsm:SupplyChainTradeTransaction>
Technical Reference
XPath: /rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransactionCommon Causes
- ·Missing trade transaction
- ·Wrong structure
Seeing this in production? The API handles CII-SR-04 automatically. See the fix response →
Frequently Asked Questions
CII must have main trade transaction element.
Add SupplyChainTradeTransaction with parties and items. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
Yes, CII-SR-04 is a critical error that will cause invoice rejection. It must be fixed before submission.
Related Errors
Last updated: 18 January 2026
Handle CII-SR-04 Automatically in Your Pipeline
The compliance engine auto-remediates this error with controlled safety policies and evidence pack generation.