# BT-67 Tax representative post code

Postal code of the seller tax representative address.

## Quick answer

Postal code of the seller tax representative address.

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

- validate
- convert

## In plain language

Postal code of the seller tax representative address.

Postal code of the seller tax representative address.

The postal code helps receiving systems and tax teams match the fiscal representative address exactly.

## What you usually enter here

National postal code

Typical valid values include: 10115, 75008

Optional according to EN 16931-1.

## What goes wrong often

Avoid values like: , 123456789012345678901

## Examples in context

The postal code helps receiving systems and tax teams match the fiscal representative address exactly.

Optional according to EN 16931-1.

## Valid Examples

- 10115
- 75008

## Invalid Examples

- 123456789012345678901

## Related Fields

The postal code helps receiving systems and tax teams match the fiscal representative address exactly.

- [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)
- [BT-69 Tax representative country code](/resources/xrechnung/bt-69-tax-representative-country-code)

## 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-67

### Data Type:
text

### Cardinality:
0..1

### Requirement:
Optional

### Max Length:
20 characters

### Since Version:
Conditional

## XML Implementation

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

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

## Why the standard cares about this field

### Business Context
The postal code helps receiving systems and tax teams match the fiscal representative address exactly.

### 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)