Possible business scenarios in Order Management

 Hi Folks,

We have following requirement, please suggest how we can achieve this process.

Ex:- We have 1 Ledger, 1 LE 2 OU's and 3 Inv org's. { Ledger-A, Le-A, OU-X, OU-Y, INV_1, INV_2, INV_3 (Master Org)}

now OU- X Inventory Org is INV_1 and OU- Y Inventory Org  is INV_2.

OU_X received PO from customer for 1000 Laptops, but INV_1 level 500 only available , so remaining 500 he need to get it from OU_Y  but OU_Y should book sales invoice for this process. how we will map in Oracle.

Please explain me the process flow steps in detail.