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ArcGIS Developer

/addPart: Add Item Part

  • URL:https://[root]/content/users/[userName]/items/[itemID]/addPart(POST only)

Example usage


Add Item Part allows the caller to upload a file part when doing an add or update item operation in multipart mode. Each upload takes an integer part number that indicates the order of this part compared to others.

Each part can be uploaded at any time, in any order, even simultaneously.

Each file part must be uploaded in an HTTP multipart request pursuant to IETF RFC1867.

Request parameters

[Common Parameters]

For a complete listing, see Common parameters.


The file to be uploaded.


Part numbers can be any number from 1 to 10,000, inclusive. A part number uniquely identifies a part and also defines its position within the object being created. If you upload a new part using the same part number that was used with a previous part, the previously uploaded part is overwritten.


Each part must be at least five (5) megabytes, except the last part. There is no size requirement on the last part of a multipart upload.

Example: partNum=1

Response properties


Indicates if the operation was successful.


The ID of the item containing the part.

JSON response syntax

 "success": true | false,
    "id":  "<item id>",


JSON response example

 "success": true,
    "id":  "49bf5db6340e4bccaceca5af3b2bec4b",