# BT-61 Payee legal registration identifier

Legal registration identifier of the payee, such as a register number.

## Quick answer

> **Delivery and payment**: Delivery dates, payment means, and the operational context around settlement.

- [Validate XML](/en/xrechnung-validator?source=resource&bt=BT-61)
- [Convert invoice](/en/pdf-to-xrechnung?source=resource&bt=BT-61)

## In plain language

Use this when the payment recipient needs to be proven as a specific legal entity.

## What you usually enter here

Registry identifier

Typical valid values include: HRB 88991

Optional according to EN 16931-1.

## Where the field sits

BT-61 belongs to the Payment part of the invoice. UBL 2.1 Syntax: Invoice › cac:PayeeParty › cac:PartyLegalEntity › cbc:CompanyID. CII (UN/CEFACT) Syntax: rsm:CrossIndustryInvoice › rsm:SupplyChainTradeTransaction › ram:ApplicableHeaderTradeSettlement › ram:PayeeTradeParty › ram:SpecifiedLegalOrganization › ram:ID.

## Valid Examples

- HRB 88991

## Related Fields

- [BT-59 Payee name](/resources/xrechnung/bt-59-payee-name)
- [BT-60 Payee identifier](/resources/xrechnung/bt-60-payee-identifier)

## 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-61

### Data Type:
identifier

### Cardinality:
0..1

### Requirement:
Optional

### Max Length:
50 characters

## XML Implementation

### UBL 2.1 Syntax
```
/Invoice/cac:PayeeParty/cac:PartyLegalEntity/cbc:CompanyID
```

### CII (UN/CEFACT) Syntax
```
/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeSettlement/ram:PayeeTradeParty/ram:SpecifiedLegalOrganization/ram:ID
```

## Create an XRechnung from your PDF

The converter reads the invoice and shows the fields it found before download, so you can check and correct the values. No PDF? Fill in the XRechnung directly in the form.

- [Convert invoice](/en/pdf-to-xrechnung)
- [Fill in XRechnung in the form](/en/create-xrechnung)

Download requires an account. Subscriptions from €10/month with annual billing (excl. taxes), or €5 per conversion (excl. taxes) without a subscription.

## 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)