Mi sembra una cosa utile. Mi ci sono scontrato anch'io un paio di volte, ora ho già votato... 
In the CMMI template for work items in the analysis tab of a requirement the amount of text is very limited- 247 ascii characters by my count. I haven't looked at the database to see what the field definition says. ...CUT...I have filed a feature request for this. Vote for it if you feel like the field is just too limiting. Below is a screen shot and the link is to the feature request. If you agree please go out and vote for this or validate it even you may not agree. https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=250645
Fonte: Impact Assessment in TFS Work Item Fields