Hello Sangeeta,
Could you please elaborate on this? I want to know what data you are trying to replicate and what kind of configurations have you done on COD? At least an overview on what all configurations are done.
Reading your post it seems your data is coming up into COD via PI without any issues.
Also want to add a note that the HOSTNAME for Communication System which is created on COD will be your HOST NAME of PI whereas the details that you add in Business Instances on COD will be for ERP system you want to integrate it with.
Regards,
Chandan