Reference
Markdown exportBT-131 Invoice line net amount
The total amount of the invoice line after applying any item-level allowances or charges, but excluding VAT.
BT-131 (Invoice line net amount) is the post-line-discount, pre-VAT amount for one invoice line. Mandatory under EN 16931. Must equal BT-129 (quantity) × BT-146 (net price) minus any line allowances plus line charges (BR-CO-4), to two decimals. Example: 100.00.
BT-131 · EN 16931 / XRechnung 3.x
BT Reference Card
Canonical EN 16931 / XRechnung facts for this business term — citable from this anchor.
- BT code
BT-131- Name
- Invoice line net amount
- Cardinality
- Mandatory (M)
- Business group
- BG-25 INVOICE LINE
- Data type
- Amount
- Example value
100.00- Common error
- BR-CO-4: Invoice line net amount (BT-131) shall equal BT-129 (Quantity) × BT-146 (Item net price), minus line allowances, plus line charges. Validator failures here are usually rounding errors.
Quick answer
The total amount of the invoice line after applying any item-level allowances or charges, but excluding VAT.
Line items
The goods or services on each invoice line, including quantities, prices, and VAT.
In plain language
The total amount of the invoice line after applying any item-level allowances or charges, but excluding VAT.
The total amount of the invoice line after applying any item-level allowances or charges, but excluding VAT.
Used to calculate the invoice subtotal (BT-106) by summing all line net amounts.
What you usually enter here
Decimal number with up to 2 decimal places, non-negative
Typical valid values include: 100.00, 250.50, 0.00
Mandatory for each invoice line according to EN 16931-1.
What goes wrong often
Avoid values like: -100.00, 100,50, 1.000.00
Relevant rule codes: BR-2, BR-DEC-07
Examples in context
Used to calculate the invoice subtotal (BT-106) by summing all line net amounts.
Mandatory for each invoice line according to EN 16931-1.
Valid Examples
Use these points as the practical checks for this section.
- 100.00
- 250.50
- 0.00
Invalid Examples
Use these points as the practical checks for this section.
- -100.00
- 100,50
- 1.000.00
XML mapping and field facts
Open the technical reference if you need XML paths, validator rule codes, legal wording, or schema-specific mapping details.
Field ID:
BT-131
Data Type:
amount
Cardinality:
1..1
Requirement:
Mandatory
Since Version:
XRechnung 1.0+
XML Implementation
/Invoice/cac:InvoiceLine/cbc:LineExtensionAmount/CrossIndustryInvoice/SupplyChainTradeTransaction/ApplicableHeaderTradeSettlement/ram:SpecifiedTradeSettlementLineMonetarySummation/ram:LineTotalAmountValidation Rules
BR-2
BR-2
BR-DEC-07
BR-DEC-07
Why the standard cares about this field
Business Context
Used to calculate the invoice subtotal (BT-106) by summing all line net amounts.
Legal Requirement
Mandatory for each invoice line according to EN 16931-1.