Santosh
In this case you should use steps that i mentioned above
1. Creation of a new Replication object(Tcode SMOEAC)
2. Creation of the new filters(Tcode r3ac1) with FM for outbound and inbound processing
3. Creation of a new queue registartion(SMQR and SMQS).
For your replication object you should write mapping of Z-tables and structures within object, filter settings, mapping FM's for load. You also should create your custom Bdoc type and link it with your replication object.
After this steps you will be able to send delta load of yours Z-Tables by Middleware. If you want use another solution - let me know.
Regards, EL