> ## 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. # Finalize a draft invoice and send to integrator ## OpenAPI ````yaml https://dev.flextell.ai/docs/api.json post /v1/invoices/{id}/send openapi: 3.1.0 info: title: Flextell API version: 0.0.1 description: '## Flextell API' servers: - url: https://dev.flextell.ai/api security: - oauth2: [] - bearer: [] paths: /v1/invoices/{id}/send: post: tags: - Invoice summary: Finalize a draft invoice and send to integrator operationId: invoice.send parameters: - name: id in: path required: true description: The invoice identifier schema: type: integer - 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 requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/InvoiceSendRequest' responses: '200': description: '' content: application/json: schema: type: object properties: success: type: string data: type: object properties: message: type: string invoice: $ref: '#/components/schemas/InvoiceResource' required: - message - invoice 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: type: string const: Invoice not found data: type: object properties: message: type: string const: Invoice not found required: - message errors: type: 'null' required: - success - error - data - errors '422': $ref: '#/components/responses/ValidationException' components: schemas: InvoiceSendRequest: type: object properties: id: type: integer description: The invoice send identifier. minimum: 1 required: - id title: InvoiceSendRequest InvoiceResource: type: object properties: id: type: integer document_number: type: string document_class: type: string document_type: type: string profile_id: type: - string - 'null' issue_date: type: string format: date-time sent_at: type: - string - 'null' format: date-time sender_tax_number: type: - string - 'null' receiver_name: type: - string - 'null' receiver_tax_number: type: - string - 'null' receiver_email: type: - string - 'null' exchange_rate: type: string amount_tax_exclusive: type: - string - 'null' amount_tax_total: type: - string - 'null' amount_payable: type: string invoice_amount: type: - string - 'null' status: type: string status_label: type: string is_printed: type: boolean is_cancelled: type: boolean is_read: type: boolean is_draft: type: boolean is_archived: type: boolean series_name: type: - string - 'null' notes: type: - string - 'null' customer: $ref: '#/components/schemas/Customer' currency: $ref: '#/components/schemas/Currency' created_at: type: - string - 'null' format: date-time updated_at: type: - string - 'null' format: date-time required: - id - document_number - document_class - document_type - profile_id - issue_date - sent_at - sender_tax_number - receiver_name - receiver_tax_number - receiver_email - exchange_rate - amount_tax_exclusive - amount_tax_total - amount_payable - invoice_amount - status - status_label - is_printed - is_cancelled - is_read - is_draft - is_archived - series_name - notes - created_at - updated_at title: InvoiceResource Customer: type: object properties: id: type: integer tenant_id: type: integer first_name: type: - string - 'null' last_name: type: - string - 'null' phone_number: type: - string - 'null' email: type: - string - 'null' date_of_birth: type: - string - 'null' format: date-time gender: anyOf: - $ref: '#/components/schemas/Gender' - type: 'null' country_id: type: - integer - 'null' identity_number: type: - string - 'null' job: type: - string - 'null' address: type: - string - 'null' deleted_at: type: - string - 'null' format: date-time created_at: type: - string - 'null' format: date-time updated_at: type: - string - 'null' format: date-time avatar_url: type: - string - 'null' avatar_updated_at: type: - string - 'null' format: date-time user_id: type: - integer - 'null' city_id: type: - integer - 'null' district_id: type: - integer - 'null' import_source_id: type: - integer - 'null' passport_number: type: - string - 'null' search_vector: type: - string - 'null' is_intake_completed: type: boolean default_channel_id: type: - integer - 'null' required: - id - tenant_id - first_name - last_name - phone_number - email - date_of_birth - gender - country_id - identity_number - job - address - deleted_at - created_at - updated_at - avatar_url - avatar_updated_at - user_id - city_id - district_id - import_source_id - passport_number - search_vector - is_intake_completed - default_channel_id title: Customer Currency: type: object properties: id: type: integer name: type: string code: type: - string - 'null' symbol: type: - string - 'null' is_active: type: string deleted_at: type: - string - 'null' format: date-time created_at: type: - string - 'null' format: date-time updated_at: type: - string - 'null' format: date-time locale: type: - string - 'null' search_vector: type: - string - 'null' required: - id - name - code - symbol - is_active - deleted_at - created_at - updated_at - locale - search_vector title: Currency Gender: type: string enum: - male - female - other title: Gender 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://dev.flextell.ai/oauth/authorize tokenUrl: https://dev.flextell.ai/oauth/token scopes: '*': all bearer: type: http scheme: bearer ````