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

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