What is the usage of the column of wmsocn in F3111

Hi

      What is the usage of the column of wmsocn in F3111.

      A scenario is when the production line move to a operation , there's some pieces of scrap quantities at a step.

      we hope that the issued quantity will not include the scraped in the next step .

      sample:

          parent item A  with B,C material  , then create a work order with 100 quantity. then the usage of B,C in bom and part list will be 100 for each.

          then in the routing

          step 1   issues 100 quantity for B. during the production ,generate 1 piece scrap .

          step 2   because of 1 scrap quantity . we only issue 99 piece for C.