# BT-136 Invoice Line Allowance Amount

An allowance amount applied at invoice line level.

## Quick answer

> **Line items**: The goods or services on each invoice line, including quantities, prices, and VAT.

- [Validate XML](/en/xrechnung-validator?source=resource&bt=BT-136)
- [Convert invoice](/en/pdf-to-xrechnung?source=resource&bt=BT-136)

## In plain language

An allowance amount applied at invoice line level.

An allowance amount applied at invoice line level.

Captures line-level discounts and surcharges so the invoice line net amount can be reconciled from quantity, price, allowances, and charges.

## What you usually enter here

Decimal amount in invoice currency

Typical valid values include: 10.00, 2.50

Defined by EN 16931 for invoice line allowance and charge details; apply profile cardinality and the listed code list or calculation rules when the element is present.

## What goes wrong often

Avoid values like: -10.00, 10,00

Relevant rule codes: PEPPOL-EN16931-R120

## Examples in context

Captures line-level discounts and surcharges so the invoice line net amount can be reconciled from quantity, price, allowances, and charges.

Defined by EN 16931 for invoice line allowance and charge details; apply profile cardinality and the listed code list or calculation rules when the element is present.

## Valid Examples

- 10.00
- 2.50

## Invalid Examples

- -10.00
- 10,00

## Related Fields

Captures line-level discounts and surcharges so the invoice line net amount can be reconciled from quantity, price, allowances, and charges.

- [BT-137 Invoice Line Allowance Base Amount](/resources/xrechnung/bt-137-invoice-line-allowance-base-amount)
- [BT-138 Invoice Line Allowance Percentage](/resources/xrechnung/bt-138-invoice-line-allowance-percentage)
- [BT-139 Invoice Line Allowance Reason](/resources/xrechnung/bt-139-invoice-line-allowance-reason)
- [BT-140 Invoice Line Allowance Reason Code](/resources/xrechnung/bt-140-invoice-line-allowance-reason-code)
- [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-136

### Data Type:
amount

### Cardinality:
0..n

### Requirement:
Optional

### Since Version:
Optional

## XML Implementation

### UBL 2.1 Syntax
```
/Invoice/cac:InvoiceLine/cac:AllowanceCharge[cbc:ChargeIndicator=false()]/cbc:Amount
```

## Validation Rules

### PEPPOL-EN16931-R120
PEPPOL-EN16931-R120

## Check whether your XRechnung sets BT-136 correctly

Upload the XML file to the free validator. It applies the KoSIT rules for XRechnung 3.0 and names each finding with its rule ID, for this field for example PEPPOL-EN16931-R120. Creating a new invoice instead? The converter checks the invoice against the same rules and shows the findings before download.

- [Validate XML](/en/xrechnung-validator)
- [Convert invoice](/en/pdf-to-xrechnung)

Free, no account needed. XML file up to 2 MB.

## Why the standard cares about this field

### Business Context
Captures line-level discounts and surcharges so the invoice line net amount can be reconciled from quantity, price, allowances, and charges.

### Legal Requirement
Defined by EN 16931 for invoice line allowance and charge details; apply profile cardinality and the listed code list or calculation rules when the element is present.

## Official sources and tools

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