# BT-65 Tax representative address line 2

Additional address information for the seller tax representative, for example building, floor, or department.

## Quick answer

Additional address information for the seller tax representative, for example building, floor, or department.

> **Seller details**: Who issued the invoice and how the recipient can identify that business reliably.

- validate
- convert

## In plain language

Additional address information for the seller tax representative, for example building, floor, or department.

Additional address information for the seller tax representative, for example building, floor, or department.

Use this line only when one address line is not enough to identify the fiscal representative unambiguously.

## What you usually enter here

Additional address details

Typical valid values include: 3rd Floor, Department VAT Services

Optional according to EN 16931-1.

## What goes wrong often

Avoid values like: , AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

## Examples in context

Use this line only when one address line is not enough to identify the fiscal representative unambiguously.

Optional according to EN 16931-1.

## Valid Examples

- 3rd Floor
- Department VAT Services

## Invalid Examples

- AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

## Related Fields

Use this line only when one address line is not enough to identify the fiscal representative unambiguously.

- [BT-64 Tax representative address line 1](/resources/xrechnung/bt-64-tax-representative-address-line-1)
- [BT-66 Tax representative city](/resources/xrechnung/bt-66-tax-representative-city)

## 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-65

### Data Type:
text

### Cardinality:
0..1

### Requirement:
Optional

### Max Length:
100 characters

### Since Version:
Optional

## XML Implementation

### UBL 2.1 Syntax
```
/Invoice/cac:TaxRepresentativeParty/cac:PostalAddress/cbc:AdditionalStreetName
```

### CII (UN/CEFACT) Syntax
```
/CrossIndustryInvoice/SupplyChainTradeTransaction/ApplicableHeaderTradeAgreement/ram:SellerTaxRepresentativeTradeParty/ram:PostalTradeAddress/ram:LineTwo
```

## Why the standard cares about this field

### Business Context
Use this line only when one address line is not enough to identify the fiscal representative unambiguously.

### 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)