# BR-DE-4

Source: https://xmlvalid.com/rules/BR-DE-4

> Das Element "Seller post code" (BT-38) muss übermittelt werden.

- Level: error
- Rule sets: XRechnung 3.0 rules (UBL) 2.6.0
- Context: `/ubl:Invoice/cac:AccountingSupplierParty/cac:Party/cac:PostalAddress | /cn:CreditNote/cac:AccountingSupplierParty/cac:Party/cac:PostalAddress`
- Test: `cbc:PostalZone[boolean(normalize-space(.))]`

> Das Element "Seller post code" (BT-38) muss übermittelt werden.

- Level: error
- Rule sets: XRechnung 3.0 rules (CII) 2.6.0
- Context: `/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeAgreement/ram:SellerTradeParty/ram:PostalTradeAddress`
- Test: `ram:PostcodeCode[boolean(normalize-space(.))]`

## Why it fails

- The seller's postal address has no post code: `cbc:PostalZone` (`ram:PostcodeCode` in CII) is missing or empty.

## How to fix it

- Add the post code to the seller address, even when the city alone would be enough in your country.

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