Add reaction to an already posted message

Question

Hello,

I'm looking for a way to add a reaction to a message which is already posted in MS Teams. I am referring to the following documentation:

https://learn.microsoft.com/en-us/graph/api/resources/chatmessagereaction?view=graph-rest-1.0

https://learn.microsoft.com/en-us/graph/api/chat-post-messages?view=graph-rest-1.0&tabs=javascript

But this documentation is not clear enough and is a little confusing.

Has anyone tried this? Any help is appreciated.

Answer 1

Hi @Parag Jadhav

We are currently unable to add reaction to an already posted message.

I've tried editing the parent message state by Update chatMessage and Reply to a message in a channel to add reactions for the message, but I keep getting the "'reactions' cannot be set in POST" error.

Until I found the exact same question on SO:

The API to reply to a message using a POST /replies request is solemnly for issuing a reply to a message, and not to edit the status of the parent message itself. Moreover, the "update chatMessage" API which is a PATCH /messages and which is the only API to edit a parent message only supports updating the policyViolation property of a chatMessage. Essentially, there is currently no documented API / already-present API examples on how to add a reaction, making this purely unsupported.

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