The best way to do this is to schedule your receipts. Do not schedule too many receipts for the same day.  This could lead to a buildup in work and goods will lie around outside.  There is a greater chance of theft and damage here. 

At least two staff members must check a batch of new stock.  We are all human and it is possible to miscount, especially if you are dealing with large or irregular batches.

Members of the receiving team must take scheduled breaks.  This job requires a lot of concentration and members need to be well rested.