Regarding Marking of cost estimate

Hi Experts,

Kindly provide the solution for the below points.

*We only select the 1 material, why in the Marking section system show 6 materials been marked?

*Does the material fail for mark or successfully?

*How can we check the result and who can help us release the block status?

*How can we give the material a new std cost? Should we need to run it again?

Thanks a lot in advance,

Satish.