What is the meaning of exception reports?

Progress (or exception reports) can be utilized to monitor and to control the project. It permits the project board or project manager to classify cost; scheduling or quality associated problems previously, and view the recent status of progress.

a. Actual time compared along with plan and material exclusions summarised

b. Actual cost compared along with plan and material exclusions summarised

c. Actual quality compared along with plan and material exclusions summarised.