difference between the Acquisition Cost and Inv Acc Price in MWS070 for Standard Costed Item

I was wodering if I could get the reason why there is a difference between the Acquisition Cost and Inv Acc Price in MWS070 for Standard Costed Item which is transfered from one warehouse to another in the same facility through a Distribution Order Stock Transaction Type 50 and Transaction ID MVW. 


I know that if the item is a distributed item, at the time of stock transfer from one whs to other the costing has to executed before doing the actual stock transfer . the price can be transferred using DPS290. The pricing for warehouse A can be different as compared to warehouse b. Hence Acquisition cost and inv acc price can be different.

I have checked DPS290 is not the reason for this issue.

Please revert back with your valuable comments for the above.