Reservation in ECS

Hi,

We are currently on ECS and on SRM_SERVER 5.5

We have a business process where a Reservation should be created if stock exist else there should be an external procurement.

The reservation feature can be obtained by switching to ECS using the BADI "BBP_EXTLOCALPO_BADI" and I guess that if stock does not exist then the system creates a PO in ECC.

The Business requirement here would be that if stock does not exist then the system must create a Local Purchase order in SRM while if stock exist then a reservation is ECC.

Any pointers would be of help

Rgrds,

Sohail