Am using two linked accounting software in inventory and finance.when I purchase goods I do these steps :1- inter goods in inventory system and add all costs needed for them in order to allocate extra costs on goods to generate unit cost.2- in inventory system I make entry dr. Raw material stock cr. Order raw material 3-in finance system I make entry dr. Order raw material (cost of goods on invoice) cr vendor of goodsdr. Order raw material (clearance exp and shipping) cr .clearance companythem I have problem that small difference ape are in order raw ,material please,how can I fix it professionally?

You can make a decision that the cost of materials includes freight, etc or it is accounted for separately. If part of cost of materials then debit raw materials. If you have differences in the costs in your inventory system you can amend your unit cost or you can calculate a variance and write it off