A subordinate GROUP line has no net amount while its parent carries one

In the extended profile, when a GROUP line carries a net amount (BT-131), all GROUP lines of the lower levels must carry one as well.

A financial field: the expected value is computed and offered, never written into the document — the correction is the issuer's to make. Test your invoice to find out whether it is affected.

The message your validator prints

Copied verbatim from the sealed artefact: this is the exact sentence the check prints when this rule fails.

cii
Num line : - [BR-FREXT-12]-If the "Subtype of invoice line item" (EXT-FR-FE-163 / BT-X-8) has the value "GROUP" and if the "Invoice line net amount" (BT-131) is specified, all lower levels which has "Subtype of invoice line item" (EXT-FR-FE-163) equal to "GROUP" MUST contain a "Invoice line net amount" (BT-131) value.

ubl
Num Fact : , Num line : - [BR-FREXT-12]-If the "Subtype of invoice line item" (EXT-FR-FE-163 / BT-X-8) has the value "GROUP" and if the "Invoice line net amount" (BT-131) is specified, all lower levels which has "Subtype of invoice line item" (EXT-FR-FE-163) equal to "GROUP" MUST contain a "Invoice line net amount" (BT-131) value.

Quoted from schematron-fnfe 1.4.0.03, licensed under Apache-2.0.

Common searches around this code

These phrases mirror what an integrator searches for: code, syntax, rule, business field and correction.

BR-FREXT-12 A subordinate GROUP line has no net amount while its parent carries oneBR-FREXT-12 FNFE Schematron packageBR-FREXT-12 BT-131Num line : - [BR-FREXT-12]-If the "Subtype of invoice line item" (EXT-FR-FE-163 / BT-X-8) has the value "GROUP" and if the "Invoice line net amount" (BT-131) is specified, all lower levels which has "Subtype of invoice line item" (EXT-FR-FE-163) equal to "GROUP" MUST contain a "Invoice line net amount" (BT-131) value.BR-FREXT-12 correction

Test your file with this error in mind

Upload the invoice involved: the report will say whether this code appears, where it appears in the document, and whether Factlint can only report it or also fix it.

To automate this check in an ERP flow, call the validation API and link every returned code to its public page.

Open the validator See the API

Why this error happens

A total can only be verified if every level below has one: a sub-group without an amount breaks the chain, and the group's amount can no longer be reconciled with its details. It only applies to documents that declare the EXTENDED-CTC-FR profile — the profile sheet replaces the CEN package and adds its own rules for hierarchical lines.

How to fix it

Fill in the net amount of every sub-group in your system. Factlint never writes an amount, even a missing one: rule 1 would at most propose it.

Severity returned by the rule set

Blocking since 1 September 2026: the current base, `fr-2026-09`, seals the FNFE 1.4.0.03 artefact in fatal mode, and it is the one the pinned engine applies by default. An invoice issued in August 2026 is judged against `fr-2026-08`, where the same rule comes out as a warning — which already rules out a “compliant” verdict. The API returns the severity of the rule set pinned for the judged invoice.

Reason it is blocked:

financial_field_policy

XML correction example

BEFORE (invalid)

<!-- GROUP A : 1000.00 ; sous-groupe A.1 : (absent) ; sous-groupe A.2 : 400.00 -->

AFTER (compliant)

<!-- GROUP A : 1000.00 ; sous-groupe A.1 : 600.00 ; sous-groupe A.2 : 400.00 -->