Hi Vinayaka,
There are so many previous postings in this forum on exactly this topic. Please search and check to see if those give you sufficient clues.
Otherwise please advise what steps you have already taken to set up the system.
Importantly, have you yet transferred anything else from ERP to GTS, or is this the very first transfer (that's to say, is it possible that the basic communication is not yet established between the two systems?
Regards,
Dave