API and SDKs
Legal Registration Number

Provide official legal registration numbers, formatted according to each country’s rules, to meet Klarna’s onboarding standards.

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The legal_registration_number field represents a company’s official registration identifier issued by a national or regional government authority. This field ensures Klarna can verify a Partner’s legal existence and regulatory compliance during Partner Onboarding. It is a required element within the Supplementary Business Data section of the Partner Business Entities resource.

Use this field to provide the official registration number exactly as recorded in the official company registry. Each country defines its own structure, format, and validation rules.

  • Use the official identifier from the local registry.
  • Include contextual details (for example, issuing authority) when required for uniqueness.
  • Follow country-specific validation formats listed below.

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This field exists under legal_registration within supplementary_business_data of the Partner Business Entities resource. It interacts with related attributes as follows:

  • legal_registration_authority — Specifies the registry or issuing authority in countries where multiple entities maintain overlapping identifiers (for example, Germany).
graph LR PBE[Partner Business Entity] --> SBD[Supplementary Business Data] SBD --> LR[Legal Registration] LR --> LRN[legal_registration_number] LR --> LRA[legal_registration_authority]

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PropertyTypeDescription

legal_registration_number

StringOfficial registration number assigned by a government authority. Format varies by country.

legal_registration_authority

StringRequired in certain countries (for example, Germany) when numbers are not globally unique.

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Klarna creates this field during Partner Onboarding and validates its correctness through automated compliance checks. Once created, it remains immutable. Corrections require intervention through Partner Support and validation by Klarna’s onboarding systems.

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In Germany, legal_registration_number must be paired with the corresponding registry authority to ensure unique identification.

FieldExampleDescription

legal_registration_number

HRB 12345Handelsregister number

legal_registration_authority

Amtsgericht MünchenIssuing court (registry authority)

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Below is a reference table for correct formatting by country.

CountryOfficial name (common)RegexExample(s)Notes
ATFirmenbuchnummer (excl. VAT)^(?!ATU\d{8})(?!K6\d{5}$).{5,11}$FN 123456aExplicitly excludes VAT ATU and social K6 IDs.
AUACN/ABN^\d{9}d{11}$123456789, 12345678901
AXOrg. ID^[A-Z]{2}\d{7}-\d$AX1234567-1Prefix + 7 digits + check.
BEBCE/KBO^[01](\.?\d){9}$0123.456.789Dots optional.
BGЕИК^\d{9}$1234567899 digits.
BYUNP^\d{9}$1234567899 digits.
CABusiness/provincial no.(^\d{2}-\d{7}$)(^\d{3}-\d{2}-\d{4}$)(^\d{9}$)(^\d{6}-\d{1}$)(^\d{10}$)12-3456789, 123-45-6789, 123456789Multiple provincial formats.
CHUID^[A-Z]{3}-\d{3}\.\d{3}\.\d{3}$CHE-123.456.789Fixed prefix.
CYReg. No.^[A-Za-zΑ-Ω]{2} \d{6}$HE 123456Two letters + space + 6 digits.
CZIČO^\d{8}$256660018 digits.
DEHandelsregister (HRB/HRA etc.)^([g,G][n,N][r,R](PV)RHR(AB))( \d{3,6})( \w{1,2})?$^HRB \d{2}$HRB 123456Handelsregister number (e.g., HRB 12345). Must be combined with legal_registration_authority (e.g., “Amtsgericht Frankfurt am Main”), since numbers are only unique within a local court’s jurisdiction.
DKCVR^\d{8}$123456788 digits.
EERegistrikood^\d{8}$102938478 digits.
ESCIF/NIF(^[A-Za-z]\d{7,8}$)(^[A-Za-z]\d{6,7}[A-Za-z]$)(^\d{7,8}[A-Za-z]$)(^TF-\d{5}$)B12345678, 12345678Z, TF-12345Historic variants supported.
FIY-tunnus^\d{7}-\d{1}$1234567-8Hyphen required.
FRSIREN/SIRET^(\d{3} ?\d{3} ?\d{3})( ?\d{5})?$552100554, 552 100 554 00013Spaces optional.
GARCCM^\d{9}$1234567899 digits.
GBCompanies House No.^([0-9]{8}[A-Za-z][0-9]{7}[A-Za-z]{2}[0-9]{6})$012345678 digits.
GGCompany No.^[A-Z]{3}\d{5}$GGG123453 letters + 5 digits.
GICompany No.^\d{5}$123455 digits.
GRGEMI^\d{12}$12345678901212 digits.
HKCR No.^\d{7,8}$123456787–8 digits.
HRMBS^\d{11}$0812345678911 digits.
HUCg. no.^\d{2}-\d{2}-\d{6}$01-09-123456Standard format.
IDNIB^\d{12}$12345678901212 digits.
IECRO No.^([A-Za-z]{2})?[0-9]{6}$123456, IE123456Optional prefix.
ILCompany No.^\d{9}$5101234569 digits.
IMCompany No.^\d{6}[A-Z]$123456C6 digits + letter.
ISKennitala (org)^\d{10}$501234123010 digits.
ITCodice fiscale / P.IVA^(\d{11}[A-Z0-9]{16})$12345678901, ABCDEFGH1234567
JECompany No.^\d{6}$1234566 digits.
JPHoujin Bangou^\d{13}$123456789012313 digits.
LIUID^[A-Z]{2}-\d{4}\.\d{3}\.\d{3}-\d$LI-1234.567.890-1Includes prefix + check.
LTLegal Entity Code^\d{9}$1234567899 digits.
LURCS^[A-Z]\d{6}$B123456Letter + 6 digits.
LVReģ. Nr.^\d{11}$4000301234511 digits.
MTROC No.^[A-Z]\d{5}$C12345Single-letter + 5 digits.
MXRFC (moral persons)^[A-Za-z]{3,4}\d{6}[A-Za-z0-9]{3}$ABC010203XYZLetters + date + suffix.
NLKvK-nummer^\d{8}$302812678 digits.
NOOrganisasjonsnummer^\d{9}$9846611859 digits.
NZNZBN^\d{13}$942903123456713 digits.
PARegistro^\d{9}$1234567899 digits.
PLREGON (company)^\d{10}$123456785010 digits.
PTRNPC^\d{9}$5001234569 digits.
ROONRC^([A-Z]\d{2}/\d{3,5}/\d{4})(^[JFC]\d{4}\d{6}\d{2}\d{1})$J40/12345/2020
SEOrganisationsnummer^\d{6}-\d{4,5}$556016-0680Dash required.
SGUEN (simplified)^\d{9}[A-Z]$123456789ANumeric + suffix only.
SICompany ID^\d{10}$123456789010 digits.
SKIČO^\d{2}\s\d{3}\s\d{3}$12 345 678Spaces required.
SMCompany No.^[A-Z]{2}\d{5}$SM123452 letters + 5 digits.
TRTicaret Sicil No.^(?:\d{5}-\d{5}\d{6}-\d)$12345-67890, 123456-7
USState File No.(^\d{2}-\d{7}$)(^\d{3}-\d{2}-\d{4}$)12-3456789, 123-45-6789State-specific variations.

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This field is included in the Partner Business Entities API resource.

  • Used during Partner onboarding to submit entity details.
  • Validated automatically by Klarna’s onboarding service.