Update AgileCentral task using CA Agile Central Plug-In in CA Continuous Delivery Directory (CDD) may fail with an error "Update Task - HTTP/1.1 401 Unauthorized".
API Key generated in Agile Central has ALM WSAPI Read-only grant
Agile Central Grants -
Read Only - You only query data via the API Key. GET requests.
Full Access - You can create or update anything in which you have access to based off of your Rally permissions.
Create a new api key by unchecking the option "ALM WSAPI Read-only"
Edit the API key and uncheck "ALM WSAPI Read-only"
Click the link below for more information on CAAgileCentralPlug-In configuration