Upload File Part

POST/

Upload a single file part. Each part is a fixed 16 MB except the last one, which may be smaller.

You must first call Create Multipart Upload Task to obtain a TaskId.

Request Parameters

Header Parameters

AuthorizationRequiredstring

Bearer <access_token>

X-TC-ActionRequiredstring

API action name, fixed value: `CreateUploadPart`

X-TC-TimestampRequiredstring

Current UNIX timestamp in seconds

X-TC-LanguageRequiredstring

Response language, required. Supported values: zh-CN / zh-TW / en-US / vi-VN / th-TH / ms-MY / id-ID

Request Body

multipart/form-data

TaskIdstring

Multipart upload task ID returned by the Create Multipart Upload Task endpoint

PartIdinteger(int32)

Part number, starting from `1`

IsLastboolean

Whether this is the last part. Recommended to set `true` for the final part.

Partfile

Binary content of the file part. Fixed 16 MB per part, last part can be smaller.

Md5string

MD5 Hex-encoded value of the current part (optional). Must be 32 characters. If provided, the part content will be verified against this hash

Response Parameters

Response.Data

ResponseOptionalobject

⌃Sub-properties

RequestIdOptionalstring

Request ID for tracking and debugging

ErrorOptionalobject

Error information (null on success)

⌃Sub-properties

CodeOptionalstring

Error code. Common codes: `INVALID_REQUEST` / `UNAUTHORIZED` / `FORBIDDEN` / `NOT_FOUND` / `INTERNAL_ERROR`. Endpoints may also return business-specific codes such as `VALIDATION.*`, `ENVELOPE.*`, `SIGNING.*`, `OPENAPI.*`. See individual endpoint documentation for details

MessageOptionalstring

Error description

Response Example

{
  "Response": {
    "RequestId": "a6c43ab5-895d-4eb8-98b8-c64edb4e3331"
  }
}

Create Multipart Upload Task Complete Multipart Upload Task