Quality without namespace/Prod with namespace

Hi Experts.

My Scenario is IDOC-> PI -> FTP, I have an strange issue.

When I'm sending the file to receiver quality ftp server its placing the file in ftp server without namespace. And its getting success the message at the backend as it does not contain the namespace.

But when we are sending the file to receiver ftp production system the file is with namespace in the receiver ftp server production. and then file is not accepting at the backend because it is with namespace.

what do you think the issue is. Can you please suggest your views and response back ASAP as its high priority issue for me.

Thanks

G V Anil