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

# Get integrator credit summary for an invoice account

> Without `invoice_account_id` the tenant's default e-voucher account is used (the oldest
one with an active integration); `data` is `null` when the tenant has no such account.
Credit packages exist only on e-voucher accounts, so any other account answers 422
`INVOICE_CREDIT_NOT_SUPPORTED`.



## OpenAPI

````yaml /api-referansi/openapi.json get /v1/invoices/credit
openapi: 3.1.0
info:
  title: Flextell API
  version: 0.0.1
  description: >-
    Flextell REST API referansı. Kimlik doğrulama, scope ve istek kuralları için
    API sekmesindeki rehberlere bakın.
servers:
  - url: https://app.flextell.ai/api
    description: Üretim
security:
  - oauth2: []
  - bearer: []
paths:
  /v1/invoices/credit:
    get:
      tags:
        - Invoice
      summary: Get integrator credit summary for an invoice account
      description: >-
        Without `invoice_account_id` the tenant's default e-voucher account is
        used (the oldest

        one with an active integration); `data` is `null` when the tenant has no
        such account.

        Credit packages exist only on e-voucher accounts, so any other account
        answers 422

        `INVOICE_CREDIT_NOT_SUPPORTED`.
      operationId: invoice.credit
      parameters:
        - name: invoice_account_id
          in: query
          description: >-
            The invoice account ID. When omitted, the tenant's default e-voucher
            account

            (the oldest one with an active integration) is used.
          schema:
            type:
              - integer
              - 'null'
            minimum: 1
        - name: X-Tenant
          in: header
          required: true
          description: >-
            Tenant identifier. Send the Tenant ID in the `X-Tenant` header to
            scope API requests to a specific tenant.
          schema:
            type: number
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                anyOf:
                  - type: object
                    properties:
                      success:
                        type: string
                      data:
                        $ref: '#/components/schemas/InvoiceCreditResource'
                    required:
                      - success
                      - data
                  - type: object
                    properties:
                      success:
                        type: string
                      data:
                        type: 'null'
                    required:
                      - success
                      - data
        '401':
          $ref: '#/components/responses/AuthenticationException'
        '403':
          $ref: '#/components/responses/AuthorizationException'
        '404':
          description: ''
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                  error_code:
                    type: string
                    const: RESOURCE_NOT_FOUND
                  message:
                    type: string
                  errors:
                    type: 'null'
                  data:
                    type: 'null'
                required:
                  - success
                  - error_code
                  - message
                  - errors
                  - data
        '422':
          $ref: '#/components/responses/ValidationException'
        '428':
          description: >-
            Mandatory setup is incomplete. Finish the setup wizard first;
            `data.next_step` names the step to continue with.
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    examples:
                      - false
                  error_code:
                    type: string
                    enum:
                      - SETUP_REQUIRED
                    examples:
                      - SETUP_REQUIRED
                  message:
                    type: string
                    examples:
                      - Complete the required setup steps to continue.
                  data:
                    type: object
                    properties:
                      next_step:
                        type:
                          - string
                          - 'null'
                        examples:
                          - clinic_info
                    required:
                      - next_step
                required:
                  - success
                  - error_code
                  - message
                  - data
components:
  schemas:
    InvoiceCreditResource:
      type: object
      properties:
        invoice_account_id:
          type:
            - integer
            - 'null'
        document_type:
          type:
            - string
            - 'null'
        total:
          type: integer
        used:
          type: integer
        remaining:
          type: integer
        percentage:
          type: number
      required:
        - invoice_account_id
        - document_type
        - total
        - used
        - remaining
        - percentage
      title: InvoiceCreditResource
  responses:
    AuthenticationException:
      description: Unauthenticated
      content:
        application/json:
          schema:
            type: object
            properties:
              message:
                type: string
                description: Error overview.
            required:
              - message
    AuthorizationException:
      description: Authorization error
      content:
        application/json:
          schema:
            type: object
            properties:
              message:
                type: string
                description: Error overview.
            required:
              - message
    ValidationException:
      description: Validation error
      content:
        application/json:
          schema:
            type: object
            properties:
              message:
                type: string
                description: Errors overview.
              errors:
                type: object
                description: A detailed description of each field that failed validation.
                additionalProperties:
                  type: array
                  items:
                    type: string
            required:
              - message
              - errors
  securitySchemes:
    oauth2:
      type: oauth2
      flows:
        authorizationCode:
          authorizationUrl: https://app.flextell.ai/oauth/authorize
          tokenUrl: https://app.flextell.ai/oauth/token
          scopes:
            '*': all
    bearer:
      type: http
      scheme: bearer

````

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