IBM Watson Conversation - Unable to connect node.js to watson conversation

I have a Problem with an IBM Watson Conversation Application.

I have my Application set up and try to connect it to my node.js Application. I’m following this tutorial here: https://github.com/watson-developer-cloud/node-sdk#conversation and i am using the official node.js api ibm provides.

Unfortunately it does not work and i get following error. { Error: Not Authorized at Request._callback (/Volumes/hd2/Projekte/vi-com-bot-service/node_modules/watson-developer-cloud/lib/requestwrapper.js:87:15) at Request.self.callback (/Volumes/hd2/Projekte/vi-com-bot-service/node_modules/watson-developer-cloud/node_modules/request/request.js:188:22) at emitTwo (events.js:106:13) at Request.emit (events.js:191:7) at Request. (/Volumes/hd2/Projekte/vi-com-bot-service/node_modules/watson-developer-cloud/node_modules/request/request.js:1171:10) at emitOne (events.js:96:13) at Request.emit (events.js:188:7) at IncomingMessage. (/Volumes/hd2/Projekte/vi-com-bot-service/node_modules/watson-developer-cloud/node_modules/request/request.js:1091:12) at IncomingMessage.g (events.js:291:16) at emitNone (events.js:91:20) code: 401, error: 'Not Authorized', description: '2017-06-01T08:57:57-04:00, Error ERCDPLTFRM-DNLKUPERR occurred when accessing https://gateway.watsonplatform.net/conversation/api/v1/workspaces/dc8097e8-fea7-47a3-80ed-57c43321377e/message?version=2017-04-21, Tran-Id: gateway-dp01-2475007148 - Invalid UserId and/or Password. Please confirm that your credentials match the end-point you are trying to access. A common error is trying to use credentials from an experimental or beta release against a GA release or vice versa' }

The Credentials i provide are correct.

Do you have ay idea, why i does not work? Best, ben

via ben0809