# BT-120 Invoice line net total

Sum of all invoice line net amounts in the invoice. This is the same as BT-106.

## Quick answer

Sum of all invoice line net amounts in the invoice. This is the same as BT-106.

> **Taxes and totals**: VAT treatment, tax breakdowns, and document totals that validators check closely.

## In plain language

Sum of all invoice line net amounts in the invoice. This is the same as BT-106.

Sum of all invoice line net amounts in the invoice. This is the same as BT-106.

Represents the total of all line items before any document-level adjustments.

## What you usually enter here

Decimal number with up to 2 decimal places, non-negative

Typical valid values include: 1000.00, 2500.50, 0.00

Mandatory according to EN 16931-1. Must equal the sum of all BT-131 values.

## What goes wrong often

Avoid values like: -100.00, 1000,50, 1.000.00

Relevant rule codes: BR-2

## Examples in context

Represents the total of all line items before any document-level adjustments.

Mandatory according to EN 16931-1. Must equal the sum of all BT-131 values.

## Valid Examples

- 1000.00
- 2500.50
- 0.00

## Invalid Examples

- -100.00
- 1000,50
- 1.000.00

## Related Fields

Represents the total of all line items before any document-level adjustments.

- [BT-106 Sum of Invoice Line Net Amount](/resources/xrechnung/bt-106-sum-of-invoice-line-net-amount)
- [BT-131 Invoice line net amount](/resources/xrechnung/bt-131-invoice-line-net-amount)

## 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-120

### Data Type:
amount

### Cardinality:
1..1

### Requirement:
Mandatory

### Since Version:
XRechnung 1.0+

## XML Implementation

### UBL 2.1 Syntax
```
/Invoice/cac:LegalMonetaryTotal/cbc:LineExtensionAmount
```

### CII (UN/CEFACT) Syntax
```
/CrossIndustryInvoice/SupplyChainTradeTransaction/ApplicableHeaderTradeSettlement/ram:SpecifiedTradeSettlementHeaderMonetarySummation/ram:LineTotalAmount
```

## Validation Rules

### BR-2
BR-2

## Why the standard cares about this field

### Business Context
Represents the total of all line items before any document-level adjustments.

### Legal Requirement
Mandatory according to EN 16931-1. Must equal the sum of all BT-131 values.

## Official sources and tools

- [KoSIT Validator](https://erechnungsvalidator.service-bw.de/)
- [Invoice Converter](/pdf-to-xrechnung)
- [XRechnung Standard](https://xeinkauf.de/xrechnung/)
- [Test Suite](https://github.com/itplr-kosit/xrechnung-testsuite)