Inventory issue with future date postings

Hello All,

     I am having a problem in the inventory for only one plant in our organisation.This plant is posting sales order with future dates(15 days ahead date) .I pulled the BX data and BF data for this plant as recommended by SAP but i am getting incorrect total stock quantity values for this plant.My users are against to change the process at this plant same as other plants because of legal restrictions Is there any way we can fix this issue in BW side.

Thanks

P