Staging Sub-inventory stock reconciliation

Hi,

We are having 1300 plus organizations and transactions accounting are happening 24 x 7.   The organizations are our production units and branch offices.  We have defined a common Staging Sub-inventory in the name of STG for all organizations in the same name for the company.  Because of this we are facing the stock reconciliation issues at the month-end and year-end.  We are not able to identify the stock lying in the staging sub-inventory is of which organization and hence we not able to provide the exact stock details organization wise from the system to our accounts and auditors.

How to overcome our issue any of them have idea about this kindly share his views is very helpful to us.