When trying to add another Test Case to a Test Set with existing Test Cases, the following error is seen:
Could not add artifact to collection
This can be caused when one of the Test Cases associated with the Test Set has been deleted, however it still shows on the list.
Release : SAAS
Component : AGILE CENTRAL
To resolve this, the offending Test Case must be identified and undeleted from the Recycle Bin.
To do this,
After this, you should be able to delete the originally deleted Test Case again as this should be an isolated incident and this is generally not a reproducible issue.