Sales agreement configuration and material adjust ment issue

 Hi Folks,

We have following scenario.

We have 2 agreements for Onhand quantity of 200

 

Agreement-A for Actual customer 01-Jan-2012(Actual customer)

Agreement -B for Internal User 01-Jan-2012(Internal user)

So we ship good for internal user quantity is 150 on  01-Jan-2012 as for temp  basis.

Now Actual customer requested quantity as 175, so we need to take back internal user shipped qunatity (150) back, how we can maintain this flow in Order Management.