What is a critical success factor in a 'lessons leWhat is a critical success factor in a 'lessons learned' document? Any innovation that was used in the project and could be used in a future project Any risks that might impact future projects Any events or issues that created stress in the project Aspects important and necessary for the project's completionarned' document? Any innovation that was used in the project and could be used in a future project Any risks that might impact future projects Any events or issues that created stress in the project Aspects important and necessary for the project's completion