azuremicrosoft-graph-apioffice-jsoffice-addinspowerpoint-addins

Unable to use open extension on drive items

I am trying to make use of the following Microsoft Graph API endpoint to add an extension to a .pptx file:

POST https://graph.microsoft.com/v1.0/drives/{drive-id}/items/{item-id}/extensions
Content-Type: application/json
Authorization: Bearer {access-token}

{
    "@odata.type": "microsoft.graph.openTypeExtension",
    "extensionName": "CountMetadata",
    "count":1 
}

On calling this API, I am getting a 400 bad request error with the following details:

{
    "error": {
        "code": "invalidRequest",
        "message": "[openExtension] The specified type named microsoft.graph.openTypeExtension is not recognized.",
        "innerError": {
            "date": "{date}",
            "request-id": "{req-id}",
            "client-request-id": "{client-req-id}"
        }
    }
}

I tried the extensions API on /me endpoint. It works there. Can anyone explain the reason for this behavior?

I tried using the API on drive items and was expecting it to create an extension but it didn't work

Solution

  • Open extensions for driveItem are supported only in beta version.

    Do not include @odata.type in the request body and ensure that the extension name starts with lower case.

    POST https://graph.microsoft.com/beta/drives/{drive-id}/items/{item-id}/extensions
Content-Type: application/json
Authorization: Bearer {access-token}

{
    "extensionName": "countMetadata",
    "count":1 
}