Good morning Mohammad,
Decreasing the quantity means that you have to record an inventory issue.
For inventory issues, AX defines the price / value that is recorded; you cannot influence that at the time you post the decrease e.g. via an adjustment journal, counting journal, etc.
Also, can you let us know if your monthly results for June have already completed and reported?
What I could think of is that you are posting an inventory adjustment, run an inventory close and then adjust the value correspondingly to what you need/like.
This will, however, have an impact on your financial inventory transactions and it seems that this is not what you would like.
Can you possibly elaborate a bit on the underlying requirement?
Many thanks,
Ludwig
