> ## Documentation Index > Fetch the complete documentation index at: https://developers.marko.fr/llms.txt > Use this file to discover all available pages before exploring further. # Créer une SPV > Crée une SPV sur l'entité et le fonds ciblé. La forme juridique, le SIREN et l'adresse peuvent etre fournis des la creation. Le type d'investissement reste porte par l'operation, car une meme SPV peut en regrouper plusieurs. ## OpenAPI ````yaml https://partner-api.marko.fr/v1/openapi.json post /spvs openapi: 3.1.0 info: title: MARKO External Partner API version: v1 description: >- Stable external API contract for the live environment. Authentication flow for partner integrations: 1. Generate an API key from the MARKO entity admin API section. 2. Keep the raw API secret server-side and use it only to sign `POST /v1/auth/token`. 3. Build the canonical message `MARKO-EXTERNAL-API-TOKEN-V1\n{key_id}\n{timestamp}\n{nonce}`. 4. Sign that message with HMAC-SHA256 and send the hex signature with `key_id`, `timestamp` and `nonce`. 5. Use the returned short-lived bearer on business endpoints as `Authorization: Bearer `. The raw API secret must never be sent on business endpoints. This public contract intentionally excludes beta endpoints. servers: - url: https://partner-api.marko.fr/v1 security: - BearerAuth: [] externalDocs: description: Download the matching Postman collection. url: /v1/postman.json paths: /spvs: post: tags: - spvs summary: Créer une SPV description: >- Crée une SPV sur l'entité et le fonds ciblé. La forme juridique, le SIREN et l'adresse peuvent etre fournis des la creation. Le type d'investissement reste porte par l'operation, car une meme SPV peut en regrouper plusieurs. operationId: spvs_create parameters: - in: header name: X-Request-ID required: false description: >- Partner-generated correlation identifier echoed in logs and error payloads. schema: type: string example: marko-spvs-create - in: header name: Idempotency-Key required: true description: >- Required for every write, including environments where replay deduplication is disabled. Reuse the same value when retrying the same logical write and use a new value for a different write. schema: type: string maxLength: 255 pattern: ^[!-~]+$ requestBody: required: true content: application/json: schema: type: object example: name: SPV Marseille fond_id: 22222222-2222-2222-2222-222222222222 forme_juridique: SAS siren: '123456782' adresse: 10 rue de la Republique, 13001 Marseille responses: '201': description: Successful response content: application/json: schema: {} example: id: 33333333-3333-3333-3333-333333333334 name: SPV Marseille forme_juridique: SAS siren: '123456782' adresse: 10 rue de la Republique, 13001 Marseille '400': description: Invalid Idempotency-Key header content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' example: type: about:blank title: Bad Request status: 400 detail: >- Idempotency-Key must contain at most 255 visible ASCII characters without spaces. request_id: req_example_partner_call '401': description: Authentication required content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' example: type: about:blank title: Unauthorized status: 401 detail: A valid bearer token is required. request_id: req_example_partner_call '403': description: Scope, route or IP restriction content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' example: type: about:blank title: Forbidden status: 403 detail: The API key does not allow this operation. request_id: req_example_partner_call '409': description: Idempotency or write target conflict content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' example: type: about:blank title: Conflict status: 409 detail: >- The idempotency key payload, external reference, target, or source conflicts with an existing write. request_id: req_example_partner_call '422': description: Validation failed content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' example: type: about:blank title: Unprocessable Content status: 422 detail: The request payload or parameters are invalid. request_id: req_example_partner_call '428': description: Required Idempotency-Key header is missing content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' example: type: about:blank title: Precondition Required status: 428 detail: The Idempotency-Key header is required. request_id: req_example_partner_call '429': description: Rate limit or progressive ban headers: Retry-After: description: Cooldown in seconds before retrying the request. schema: type: string content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' example: type: about:blank title: Too Many Requests status: 429 detail: The request rate limit was exceeded. request_id: req_example_partner_call '500': description: Unexpected server error content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' example: type: about:blank title: Internal Server Error status: 500 detail: An unexpected server error occurred. request_id: req_example_partner_call deprecated: false security: - BearerAuth: [] components: schemas: ProblemDetails: type: object required: - title - status - detail properties: type: type: string default: about:blank title: type: string status: type: integer detail: type: string request_id: type: string scope: type: string route_id: type: string reason_code: type: string securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: MARKO short-lived bearer description: >- Use the `access_token` returned by `POST /v1/auth/token`. Do not send the raw API secret on business endpoints. ````