Hello Sai,
Do you require only steps to create the product, Technical System and Business system? Pre-requisite step before going for product creation is you must register your SLD.
Also there are some initial steps to be done by your Basis team, post installation, i hope this has been done. Please refer to the below links for more info on the same -
Configuring System Landscape Directory - AS Java Configuration - SAP Library
How to Create & Configure Local SLD on SAP NetWeaver 7.3 AS Java after Installation
And for the steps done in ABAP stack done using RZ70, you need to do it in Java stack by creating two HTTP destinations SLD_Client and SLD_DataSupplier.
You can refer the below blog for this. You can skip the steps provided to migrate the SLD to Solution Manager. You can use Local SLD -
Step by Step guide to update Advanced Adapter Engine System to Process Orchestration System
Regards,
Nitin