E WM stock is composed by the physical stocks plus the Difference Analyzer stocks. /SCWM/ERP_STOCKCHECK shows the total physical stock quantity of a given warehouse. The Physical Inventory difference was not yet posted on /SCWM/DIFF_ANALYZER, so the stocks still exist in the warehouse as a "difference" yet to be posted. While /SCWM/MON displays only available and physical stocks, not differences. The correct procedure is to run the /SCWM/DIFF_ANALYZER to clear this stock pending, so it will not be shown on /SCWM/ERP_STOCKCHECK as well. If /SCWM/ERP_STOCKCHECK has a different EWM quantity than the total physical stock, the difference can be found on the Difference Analyzer , since the EWM stock is equal to the physical stock plus the Difference Analyzer stock.
This blog will give an overview of all standard functionalities provided by SAP from Logistics perspective which we might have overlooked during our regular practise.