> ## Documentation Index > Fetch the complete documentation index at: https://docs.swipelux.com/llms.txt > Use this file to discover all available pages before exploring further. # Upload customer document > Uploads one PDF, JPEG, PNG, WebP, or HEIF/HEIC document up to 25 MB as `multipart/form-data`. Send the raw binary in the `file` part; base64 JSON is not accepted. Returns metadata for task submissions. ## OpenAPI ````yaml /openapi.json post /v3/customers/{customerId}/documents openapi: 3.1.0 info: title: Swipelux API version: 3.1.0 servers: - url: https://platform.swipelux.com description: Production and sandbox; environment selected by API key security: - apiKey: [] tags: - name: customers x-displayName: Customers description: >- Create, list, update, export, and archive individual and business customers and their related parties. - name: capabilities x-displayName: Capabilities description: >- Discover, request, inspect, and cancel customer capabilities and their institution applications. - name: accounts x-displayName: Accounts description: Create, inspect, update, and archive customer accounts. - name: recipients x-displayName: Recipients description: Create third-party recipients and their payout destinations. - name: Tasks x-displayName: Tasks description: Inspect customer, capability, application, account, and transfer tasks. - name: Task submissions x-displayName: Task submissions description: Submit and inspect immutable answers to customer tasks. - name: documents x-displayName: Documents description: Upload and inspect customer documents used in task submissions. - name: money-movement x-displayName: Money movement description: Create quotes, execute quote-backed transfers, and inspect transfer state. - name: rules x-displayName: Rules description: >- Standing instructions that act on incoming funds. A rule watches a custodial wallet account (`trigger`) and, when funds become available on it, transfers them to a target (`action`) — most commonly a sweep to a non-custodial wallet destination. Rules match at the account credit, not at the deposit rail: fiat deposits settle into the issued bank account's settlement wallet account, so a rule on that wallet account catches ACH/SEPA/SWIFT deposits, stablecoin deposits, and internal transfers alike. The action target reuses the money-movement vocabulary (`account` for the customer's own accounts, `destination` for recipient destinations). At most one non-archived rule may watch a given trigger account. Statuses: `active ⇄ paused → archived` — pause and resume through PATCH, archive (terminal) through DELETE. - name: sandbox x-displayName: Sandbox description: Simulate supported account, task, capability, and transfer outcomes. - name: institutions x-displayName: Institutions description: List institutions referenced by capabilities and applications. - name: webhooks x-displayName: Webhooks description: Configure webhook endpoints and inspect delivery activity. externalDocs: description: Swipelux Documentation url: https://docs.swipelux.com paths: /v3/customers/{customerId}/documents: post: tags: - documents summary: Upload customer document description: >- Uploads one PDF, JPEG, PNG, WebP, or HEIF/HEIC document up to 25 MB as `multipart/form-data`. Send the raw binary in the `file` part; base64 JSON is not accepted. Returns metadata for task submissions. operationId: postV3CustomersByCustomerIdDocuments parameters: - name: Idempotency-Key in: header required: true schema: type: string minLength: 1 maxLength: 255 example: idem_20260626_0001 description: >- Required for effectful v3 requests (POST, PATCH, PUT, DELETE). Reuse the same key with the same body to replay the cached response. - schema: type: string in: path name: customerId required: true requestBody: required: true content: multipart/form-data: schema: type: object required: - file properties: file: type: string format: binary description: >- Raw PDF, JPEG, PNG, WebP, or HEIF/HEIC file bytes (max 25 MB); not a base64 string. type: type: string description: Optional document type. responses: '201': description: Document uploaded headers: Idempotency-Replayed: description: >- Present with value `true` when an idempotent request is replayed. schema: type: string enum: - 'true' content: application/json: schema: type: object properties: data: type: object properties: id: type: string description: Document identifier (`doc_...`). type: type: string description: Document type. fileName: type: string description: Uploaded file name. contentType: type: string description: Uploaded content type. sizeBytes: type: number description: Uploaded file size in bytes. createdAt: type: string description: Created at. updatedAt: type: string description: Updated at. status: enum: - uploaded description: >- Document status. Closed enum — exhaustive; additions would be a breaking change. archivedAt: description: 'Always null: archived documents are not returned here.' nullable: true required: - id - type - fileName - contentType - sizeBytes - createdAt - updatedAt - status - archivedAt required: - data '400': description: Invalid multipart upload content: application/problem+json: schema: type: object additionalProperties: false required: - type - title - status - code - detail - correlationId properties: type: type: string format: uri enum: - https://docs.swipelux.com/errors/validation-error description: Documentation URL for this stable problem code. title: type: string description: Short human-readable problem title. status: type: integer enum: - 400 description: HTTP status code. code: type: string enum: - validation_error description: Stable snake_case error code. detail: type: string description: Actionable problem detail for legitimate callers. correlationId: type: string description: Request correlation id. Mirrors `X-Request-Id`. errors: type: array description: Field-level validation errors. items: type: object additionalProperties: false required: - pointer - code - message properties: pointer: type: string description: JSON Pointer into the request body. code: type: string description: Machine-readable field error code. message: type: string description: Human-readable field error message. '401': description: Authentication required. content: application/problem+json: schema: type: object additionalProperties: false required: - type - title - status - code - detail - correlationId - retryable properties: type: type: string format: uri enum: - https://docs.swipelux.com/errors/unauthorized description: Documentation URL for this stable problem code. title: type: string description: Short human-readable problem title. status: type: integer enum: - 401 description: HTTP status code. code: type: string enum: - unauthorized description: Stable snake_case error code. detail: type: string description: Actionable problem detail for legitimate callers. correlationId: type: string description: Request correlation id. Mirrors `X-Request-Id`. errors: type: array description: Field-level validation errors. items: type: object additionalProperties: false required: - pointer - code - message properties: pointer: type: string description: JSON Pointer into the request body. code: type: string description: Machine-readable field error code. message: type: string description: Human-readable field error message. retryable: type: boolean enum: - false description: Whether retrying the same request may succeed. '403': description: Insufficient permissions. content: application/problem+json: schema: type: object additionalProperties: false required: - type - title - status - code - detail - correlationId - retryable properties: type: type: string format: uri enum: - https://docs.swipelux.com/errors/forbidden description: Documentation URL for this stable problem code. title: type: string description: Short human-readable problem title. status: type: integer enum: - 403 description: HTTP status code. code: type: string enum: - forbidden description: Stable snake_case error code. detail: type: string description: Actionable problem detail for legitimate callers. correlationId: type: string description: Request correlation id. Mirrors `X-Request-Id`. errors: type: array description: Field-level validation errors. items: type: object additionalProperties: false required: - pointer - code - message properties: pointer: type: string description: JSON Pointer into the request body. code: type: string description: Machine-readable field error code. message: type: string description: Human-readable field error message. retryable: type: boolean enum: - false description: Whether retrying the same request may succeed. '404': description: Resource not found. content: application/problem+json: schema: type: object additionalProperties: false required: - type - title - status - code - detail - correlationId properties: type: type: string format: uri enum: - https://docs.swipelux.com/errors/customer-not-found description: Documentation URL for this stable problem code. title: type: string description: Short human-readable problem title. status: type: integer enum: - 404 description: HTTP status code. code: type: string enum: - customer_not_found description: Stable snake_case error code. detail: type: string description: Actionable problem detail for legitimate callers. correlationId: type: string description: Request correlation id. Mirrors `X-Request-Id`. errors: type: array description: Field-level validation errors. items: type: object additionalProperties: false required: - pointer - code - message properties: pointer: type: string description: JSON Pointer into the request body. code: type: string description: Machine-readable field error code. message: type: string description: Human-readable field error message. '409': description: Request conflict. content: application/problem+json: schema: type: object additionalProperties: false required: - type - title - status - code - detail - correlationId - retryable properties: type: type: string format: uri enum: - https://docs.swipelux.com/errors/idempotency-conflict description: Documentation URL for this stable problem code. title: type: string description: Short human-readable problem title. status: type: integer enum: - 409 description: HTTP status code. code: type: string enum: - idempotency_conflict description: Stable snake_case error code. detail: type: string description: Actionable problem detail for legitimate callers. correlationId: type: string description: Request correlation id. Mirrors `X-Request-Id`. errors: type: array description: Field-level validation errors. items: type: object additionalProperties: false required: - pointer - code - message properties: pointer: type: string description: JSON Pointer into the request body. code: type: string description: Machine-readable field error code. message: type: string description: Human-readable field error message. retryable: type: boolean enum: - false description: Whether retrying the same request may succeed. '500': description: Internal server error. content: application/problem+json: schema: type: object additionalProperties: false required: - type - title - status - code - detail - correlationId - retryable properties: type: type: string format: uri enum: - https://docs.swipelux.com/errors/internal-error description: Documentation URL for this stable problem code. title: type: string description: Short human-readable problem title. status: type: integer enum: - 500 description: HTTP status code. code: type: string enum: - internal_error description: Stable snake_case error code. detail: type: string description: Actionable problem detail for legitimate callers. correlationId: type: string description: Request correlation id. Mirrors `X-Request-Id`. errors: type: array description: Field-level validation errors. items: type: object additionalProperties: false required: - pointer - code - message properties: pointer: type: string description: JSON Pointer into the request body. code: type: string description: Machine-readable field error code. message: type: string description: Human-readable field error message. retryable: type: boolean enum: - true description: Whether retrying the same request may succeed. components: securitySchemes: apiKey: type: apiKey in: header name: X-API-Key ```` ## Related topics - [Capabilities and tasks](/integration/onboarding/capabilities-and-requirements.md) - [Individual onboarding API workflow](/knowledge-base/individual-onboarding/api-workflow.md) - [KYB workflow](/knowledge-base/business-onboarding/kyb-workflow.md) - [Business onboarding FAQ](/knowledge-base/business-onboarding/faq.md) - [Archive customer document](/api-reference/documents/delete-v3-customers-by-customer-id-documents-by-document-id.md)