# BT-135 Invoice line period end date

The date when the period for the invoice line ends.

## Quick answer

The date when the period for the invoice line ends.

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

## In plain language

The date when the period for the invoice line ends.

The date when the period for the invoice line ends.

Used for services or subscriptions with specific billing periods.

## What you usually enter here

ISO 8601 date format (YYYY-MM-DD)

Typical valid values include: 2024-01-31, 2024-03-31, 2024-12-31

Optional according to EN 16931-1.

## What goes wrong often

Avoid values like: 31.01.2024, 2024/01/31, 2024-13-01

Relevant rule codes: BR-2

## Examples in context

Used for services or subscriptions with specific billing periods.

Optional according to EN 16931-1.

## Valid Examples

- 2024-01-31
- 2024-03-31
- 2024-12-31

## Invalid Examples

- 31.01.2024
- 2024/01/31
- 2024-13-01

## Related Fields

Used for services or subscriptions with specific billing periods.

- [BT-126 Invoice line identifier](/resources/xrechnung/bt-126-invoice-line-identifier)
- [BT-134 Invoice line period start date](/resources/xrechnung/bt-134-invoice-line-period-start-date)

## 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-135

### Data Type:
date

### Cardinality:
0..1

### Requirement:
Optional

### Since Version:
Optional

## XML Implementation

### UBL 2.1 Syntax
```
/Invoice/cac:InvoiceLine/cac:InvoicePeriod/cbc:EndDate
```

### CII (UN/CEFACT) Syntax
```
/CrossIndustryInvoice/SupplyChainTradeTransaction/ApplicableHeaderTradeSettlement/ram:SpecifiedTradeSettlementLineMonetarySummation/ram:BillingSpecifiedPeriod/ram:EndDateTime
```

## Validation Rules

### BR-2
BR-2

## Why the standard cares about this field

### Business Context
Used for services or subscriptions with specific billing periods.

### Legal Requirement
Optional according to EN 16931-1.

## 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)