Transfer custom field in ROS to ECC and replicate back to SRM

Hi,

We are implementing SRM 7.02 in two client scenario for public sector and our requirement is to have MSME field in ROS screen and during transfer

it to ECC same data should also be stored there.

Once vendor data is complete we need to replicate that custom field to SRM client as well.

Can you please suggest how we can do that.We are using PI for data transfer from ROS client to ECC.