MRP not scheduling job

This is what was sent to me buy the user…_Not all the make direct seat jobs are scheduled so they do not generate all the child mfg part MRP jobs and therefore will do not generate all lower level requirements. For purchase parts at the seat level there is demand but the dates are not there and there are no suggestions.

I noticed on the jobs that there are no start dates on the jobs. MRP should have populated them. I am not sure why not but i am guessing this why the jobs are not getting scheduled.

Any thoughts.