Stock transfer requisitions to consider future supply

Hi All

We have a business scenario where we need to run BOP for Sales order and DEP:ConRl (Deployment STR;s) / PReqRel (STR's).

Problem is that, the STR's cannot consider future supply. For eg: If my Dep ConRl date (start date of the STR) is on 11/20/2015 and my supply is on 11/21/2015, system doesnt recognize that and hence there is no confirmation for the STR. Even If I do it manually in ECC, its the same result.

Problem: A new sales order can come and confirm against the supply leading to overcommit scenario.

Does anyone know of a workaround / fix or is it available in any future releases?

We are currently on 

ECC 6.0, :SAP_APPL / 600 / 0019,

APO: SCM /701/005

Thanks

Hari