Can't reply to third party imported Messages in Microsoft Teams using Graph API

Question

History: I have created team & imported messages as instructed here . After import and completing migration when I access the team from Teams web interface I am not able to reply to the messages imported in Migration mode.

On inspection, I found following error showing in Chrome console

Failed to load resource: the server responded with a status of 404 ()
2021-09-03T09:11:13.550Z MessageService: actionHandlerSendMessage: Error while sending message 2644495256888454000 executed by OAM: {"statusCode":404,"headers":{"cache-control":"no-store, must-revalidate, no-cache","content-length":"184","content-type":"application/json; charset=utf-8","contextid":"tcid=0,server=msgapi-production-wjp-azsc5-1-12,cv=2O3RTUcHh0+S7y96owxjMg.0","pragma":"no-cache"},"errorMessage":"{\r\n  \"subCode\": \"PostNotFound\",\r\n  \"details\": \"Post does not exist in the thread.\",\r\n  \"errorCode\": null,\r\n  \"errorSubCode\": null\r\n}","errorCode":404,"request":{},"conversationId":"19:ef2148b145374e49b51879d260a363a5@thread.tacv2"}

Please help me understand the error.

Answer 1

We have raised a bug for this. The issue is fixed. Now we can reply to third party imported Messages in Microsoft Teams using Graph API