> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bolta.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Register Issuer

> Registers a business that issues tax invoices and returns its `issuerId`.



## OpenAPI

````yaml /openapi.en.yaml post /v1/issuers
openapi: 3.1.0
info:
  title: Bolta API
  description: >
    The Bolta e-tax invoice API. [API
    Overview](/en/docs/api-introduction/overview) | [Authentication
    guide](/en/docs/api-introduction/authentication) | [Use
    cases](/en/docs/api-introduction/usecase-b2b)
  version: 1.0.0
servers:
  - url: https://xapi.bolta.io
    description: Bolta API server
security:
  - basicAuth: []
tags:
  - name: Tax Invoice Issuance
    description: >
      Issue and amend e-tax invoices. [Calculating the issuance
      amount](/en/docs/api-introduction/issuance-guide) | [Amendment
      types](/en/docs/api-introduction/amendment-guide)
  - name: Tax Invoice Retrieval
    description: >
      Retrieve e-tax invoice results and request processing status, and download
      the PDF of an issued tax invoice. [Tax invoice PDF
      guide](/en/docs/api-introduction/tax-invoice-pdf)
  - name: Reverse Issuance
    description: >
      Request and manage reverse issuance of e-tax invoices. [Email-approval
      reverse issuance](/en/docs/api-introduction/usecase-reverse-email) |
      [Simple-approval reverse
      issuance](/en/docs/api-introduction/usecase-reverse-simple)
  - name: Cash Receipt
    description: >
      Issue, cancel, and check the status of cash receipts. [Cash receipt
      guide](/en/docs/api-introduction/cash-receipt-guide) | [Cash receipt
      webhooks](/en/docs/api-introduction/webhook-cash-receipt)
  - name: Business Registration Status
    description: >
      Check the registration status and tax type of a business registration
      number. Look up one number or up to 100 numbers at once. This API requires
      no issuer registration and no certificate. [Business registration status
      guide](/en/docs/api-introduction/business-registration-status)
  - name: Revenue and Expense
    description: >
      Retrieve the revenue and expense tax invoices of your own business in
      Bolta in the order they changed, and request a collection. Responses
      include documents issued through Bolta and documents collected from
      Hometax. You need a Standard plan or higher, and the calls deduct no
      points. Connect Hometax in the Bolta dashboard first. [Revenue and expense
      guide](/en/docs/api-introduction/revenue-expense)
  - name: Bank Account Transactions
    description: >
      Retrieve the bank accounts and transactions connected to your own business
      in Bolta, and request a sync. You need a Standard plan or higher, and the
      calls deduct no points. Connect bank accounts in the Bolta dashboard
      first. [Bank account transactions
      guide](/en/docs/api-introduction/bank-account-transactions)
  - name: Bank Account Holder
    description: >
      Look up account holder names with a bank code and an account number. One
      path takes a single account and the other takes up to 100 accounts at
      once. Each account that returns a holder name deducts 50 points. [Bank
      account holder guide](/en/docs/api-introduction/bank-account-holder)
  - name: Document Issuance
    description: >
      Issue National Tax Service certificates from Hometax or a certified copy
      of corporate registry, and download the original PDF. Hometax documents
      are issued only for the business that owns the API key, and you must
      register a joint certificate in the Bolta dashboard. A corporate registry
      is issued for the corporation in `corporationNumber` and needs no joint
      certificate. Supported corporation types are stock company, limited
      company, general partnership company, limited partnership company, limited
      liability company, incorporated association, incorporated foundation,
      medical corporation, cooperative (including social cooperative), and other
      corporate entity (such as a patent corporation). Each document deducts 500
      points for Hometax documents, 1,000 points for a corporate registry view
      copy, and 1,500 points for a submission copy. [Document issuance
      guide](/en/docs/api-introduction/document-issuance)
  - name: Issuer
    description: >
      Register and manage businesses that act as tax invoice issuers.
      Certificate requirements depend on the issuance type.
      [Glossary](/en/docs/api-introduction/glossary) | [Delegated
      issuance](/en/docs/api-introduction/usecase-delegated) | [Brokered Tax
      Invoice Issuance](/en/docs/api-introduction/usecase-brokered)
  - name: Certificate
    description: >
      Register and manage issuer certificates. [Certificate
      registration](/en/docs/api-introduction/certificate-registration)
paths:
  /v1/issuers:
    post:
      tags:
        - Issuer
      summary: Register Issuer
      description: >-
        Registers a business that issues tax invoices and returns its
        `issuerId`.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/IssuerRegistrationRequest'
      responses:
        '200':
          description: Issuer registered
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Issuer'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
components:
  schemas:
    IssuerRegistrationRequest:
      type: object
      description: Issuer registration request body
      properties:
        identificationNumber:
          $ref: '#/components/schemas/BusinessRegistrationNumber'
          description: Business registration number
        taxRegistrationId:
          description: Sub-business place code
          anyOf:
            - $ref: '#/components/schemas/TaxRegistrationId'
            - type: 'null'
        organizationName:
          $ref: '#/components/schemas/OrganizationName'
          description: Organization name
        representativeName:
          $ref: '#/components/schemas/RepresentativeName'
          description: Representative name
      required:
        - identificationNumber
        - representativeName
        - organizationName
    Issuer:
      type: object
      description: Registered issuer and certificate status
      properties:
        issuerId:
          $ref: '#/components/schemas/IssuerId'
        identificationNumber:
          $ref: '#/components/schemas/BusinessRegistrationNumber'
        taxRegistrationId:
          anyOf:
            - $ref: '#/components/schemas/TaxRegistrationId'
            - type: 'null'
        organizationName:
          $ref: '#/components/schemas/OrganizationName'
        representativeName:
          $ref: '#/components/schemas/RepresentativeName'
        certificate:
          anyOf:
            - $ref: '#/components/schemas/IssuerCertificate'
            - type: 'null'
      required:
        - issuerId
        - identificationNumber
        - taxRegistrationId
        - organizationName
        - representativeName
        - certificate
    ErrorResponse:
      type: object
      description: The error response returned when an API request fails
      properties:
        code:
          type: string
          description: Error type identifier
        message:
          type: string
          description: Error description
        traceId:
          type: string
          description: Request trace identifier
      required:
        - code
        - message
        - traceId
    BusinessRegistrationNumber:
      type: string
      title: Business registration number
      description: >-
        A checksum-valid 10-digit number without hyphens (-). Pattern:
        `^\d{10}$`. Example numbers in the docs are placeholders that fail the
        checksum. Set a real business registration number.
      pattern: ^\d{10}$
      examples:
        - '1234567890'
    TaxRegistrationId:
      type: string
      title: Sub-business place code
      description: '4 digits, excluding `0000`. Pattern: `^(?!0{4})\d{4}$`'
      pattern: ^(?!0{4})\d{4}$
      examples:
        - '0001'
        - '0002'
      minLength: 4
      maxLength: 4
    OrganizationName:
      type: string
      title: Organization name
      description: Organization name
      maxLength: 70
      minLength: 1
    RepresentativeName:
      type: string
      title: Representative name
      description: Representative name
      minLength: 1
      maxLength: 30
    IssuerId:
      type: string
      title: Issuer identifier
      description: >-
        The identifier returned when an issuer is registered. Store the complete
        string as-is.
    IssuerCertificate:
      type: object
      properties:
        issuedAt:
          type: string
          format: date-time
          description: Certificate issuance timestamp
        expiresAt:
          type: string
          format: date-time
          description: Certificate expiration timestamp
      required:
        - issuedAt
        - expiresAt
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: >-
        Append a colon to your API key, Base64-encode it, and put it in the
        header. Enter the API key as the username and leave the password empty.

````