Can't add users to groups

Describe the bug

I'm trying to add a user to a group as follows

export const addUserToGroup = async (userId: string, groupId: string) => {
  try {
    await client()
      .groups.byGroupId(groupId)
      .members.ref.post({
        odataId: `https://graph.microsoft.com/v1.0/directoryObjects/${userId}`,
      });
    return true;
  } catch (error) {
    console.error('Error adding user to group:', error);
    return false;
  }

I get the following error

Error adding user to group: {
  errorEscaped: {
    code: 'Request_BadRequest',
    message: "Unrecognized query argument specified: '@id'.",
    innerError: {
      date: 2025-11-09T12:25:07.000Z,
      requestId: 'xxx',
      clientRequestId: 'xxx'
    }
  },
  message: "Unrecognized query argument specified: '@id'.",
  responseStatusCode: 400,
  responseHeaders: {
    'client-request-id': [ 'xxx' ],
    'content-encoding': [ 'gzip' ],
    'content-type': [ 'application/json' ],
    date: [ 'Sun', ' 09 Nov 2025 23:25:07 GMT' ],
    'request-id': [ 'xxx' ],
    'strict-transport-security': [ 'max-age=31536000' ],
    'transfer-encoding': [ 'chunked' ],
    vary: [ 'Accept-Encoding' ],
    'x-ms-ags-diagnostic': [
      '{"ServerInfo":{"DataCenter":"Australia East"',
      '"Slice":"E"',
      '"Ring":"5"',
      '"ScaleUnit":"000"',
      '"RoleInstance":"xxx"}}'
    ]
  }
}

Expected behavior

The user is added to the group

How to reproduce

Use the code above.
NOTE: This for Azure AD B2C in case it matters

SDK Version

1.0.0-preview.74

Latest version known to work for scenario above?

Has never worked

Known Workarounds

This patch works around it

diff --git a/groups/item/members/ref/index.js b/groups/item/members/ref/index.js
index 9e8a14654fab3754b01311e07c9bd79d2569d5ca..0d396bdf8da2bf273686abbcb08fae6d581682dd 100644
--- a/groups/item/members/ref/index.js
+++ b/groups/item/members/ref/index.js
@@ -8,7 +8,7 @@ import { createODataErrorFromDiscriminatorValue } from '@microsoft/msgraph-sdk/m
 /**
  * Uri template for the request builder.
  */
-export const RefRequestBuilderUriTemplate = "{+baseurl}/groups/{group%2Did}/members/$ref?@id={%40id}{&%24count,%24filter,%24orderby,%24search,%24skip,%24top}";
+export const RefRequestBuilderUriTemplate = "{+baseurl}/groups/{group%2Did}/members/$ref?{&%24count,%24filter,%24orderby,%24search,%24skip,%24top}";
 /**
  * Mapper for query parameters from symbol name to serialization name represented as a constant.
  */

Other information

I'm happy to generate a PR with the above if the fix is sensible.

I'm also new to the API so it's possible my code is not taking the right approach

Start with groups/item/members/ref/index.js and inspect RefRequestBuilderUriTemplate, comparing it with the request body and the reported '@id' error. Reproduce the group-member request against the stated SDK scenario and verify that adding the user succeeds without the workaround; check the generated request path before considering the issue done.