question

Hi @66304432,

No Meeting ID's or Conference ID's are attached with the invite.

Does this issue affect all users or only some particular users in the same environment have this issue?
Is there any difference if the Teams meeting is scheduled from Outlook instead of Teams?

Normally, Conference IDs are generated automatically and set when you Audio Conferencing is enabled for a user. Please make sure the users have been assigned the Audio Conferencing licenses, see Get and assign licenses. Then go to Teams admin center > Users > Manage users, select a problematic user, click Account, check if you are able to see the "Audio Conferencing" section and it's showing as "On":

If the above doesn't work, could you remove all personal information and share a screenshot of the Teams related section of a problematic meeting invitation so that we can understand better about your situation?

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