Hi Amandeep,
want to copy PEC client 400 to QEC client 200 or basically refresh data from PEC client 400 to QEC client 200.
In the above process, I don't want to create another client 400 in QEC! I want to reuse client 200 in QEC.
Yes it is possible. You can use client export/import method using SAP_ALL profile.
You need to ensure that QEC system has enough space to accommodate PEC data.
Post client copy execute BDLS to change the logical system name in QEC.
Hope this helps.
Regards,
Deepak Kori