How is "Affects Plan Item" For Defects Determined?

Little late to the show, but this question was related to mine so I might as well answer.

It seems "Affects Plan Item" link is created on a defect whenever a work item is in the Development Items section of a test case, and a defect is created as part of a test result of that test case.  Development Items can be linked in one of two ways - directly by adding the work item from the section in the test case in QM, or by creating a 'Tested By Test Case' link in RTC - this is different than creating a 'Related Test Case' link in RTC.

Hi,

Are you referring to the "Affects Plan Item" when linking work items to plans in the web client?

http://pic.dhe.ibm.com/infocenter/clmhelp/v4r0m3/index.jsp?re=1&topic=/com.ibm.team.workitem.doc/topics/t_linking_work_items_to_plan_items_web.html

What context do you want to know about "Affects Plan Item" for defects?

Cheers,
Will