Upon clicking the button though, immediately the following error message appears:
:warning: Failed to send:
There was a problem submitting your changes. Try again in a minute.
After scratching my head, I opened the Teams web app and checked the console:
POST https://teams.microsoft.com/api/mt/emea/beta/users/connectors/19:0d89db468868447a8e526a258788b854@thread.tacv2;messageid=1615721159117/1615721159117/executeAction 400 2021-03-14T11:30:20.322Z [O365ActionPaneController.makeHttpPOSTRequestForConnector()] Http invoke failed: { "data": { "errorCode": "BadRequest" }, "status": 400, "config": { "method": "POST", "transformRequest": [ null ], "transformResponse": [ null ], "url": "https://teams.microsoft.com/api/mt/emea/beta/users/connectors/19:0d89db468868447a8e526a258788b854@thread.tacv2;messageid=1615721159117/1615721159117/executeAction", "data": { "inputParameters": [], "actionId": "3c5b2184-bffb-4797-9bbd-03fe41e11a83", "potentialAction": "{\"@type\":\"HttpPOST\",\"@id\":\"3c5b2184-bffb-4797-9bbd-03fe41e11a83\",\"name\":\"Approve\",\"target\":\"https://our.appplication.host/.teams/webhook\",\"headers\":[],\"body\":\"verification.approve\",\"bodyContentType\":\"\"}", "name": "action/connector", "integrationId": "8urpi87b0u", "meta": "\"{\\\"connectorSenderGuid\\\":\\\"203a1e2c-26cc-47ca-83ae-be98f960b6b2\\\",\\\"providerAccountUniqueId\\\":null,\\\"connectorConfigurationAlternateId\\\":\\\"8a43fac7aa1748688609de3602c9a4c5\\\"}\"", "clientInfo": { "locale": "en-us", "country": "us", "platform": "Web", "clientVersion": "1415/1.0.0.2021030227" } }, "headers": { "X-Skypetoken": "pii", "Authorization": "pii", "Accept": "application/json, text/plain, */*", "Content-Type": "application/json;charset=utf-8", "X-RingOverride": "general", "x-ms-scenario-id": "620", "x-ms-user-type": null, "x-ms-client-type": "web", "x-ms-client-env": "pckgsvc-prod-c1-euno-02", "x-ms-client-version": "1415/1.0.0.2021030227", "x-ms-session-id": "694afe93-2218-14ab-fd16-d46edaf9fcc5" }, "counter": "ext_actionable_card_http_post", "geoRoutingLookupDuration": 0.014999997802078724, "decrementNetworkRequests": null, "hostName": "teams.microsoft.com", "requestCreationDuration": 0.09000004455447197, "requestStartTime": 3355762.155000033, "responseStartTime": 3356549.715000001, "requestDuration": 787.5649999482557 }, "statusText": "" }
So the only valuable information returned from the server seems to be the response {"errorCode":"BadRequest"}. That's a little thin.
I tried different variations of the body property - with quotes, without, with a content type, empty - no change.
What do I have to do to get message actions working?