This remote server data is not supported to import in the current central server

This remote server data is not supported to import in the current central server

Dear All,

We are using Manage Engine Service Desk Plus 8.1.0 Build 8121  and Asset Explorer 5.6.0
Build 5614
as Remote AE Server on Site.

After we scan on our site and try to "export and push data to central Server"
We have an error notification like this

Problem in exporting and pushing data to central server.
Authentication failed while trying to login in to central server with the credentials provided.


Then we try to export data to get a zip file. 
When we try to import the zip file at our  Service Desk Plus it says this error  


Problem while importing the assets : This remote server data is not supported to import in the current central server.


What should we do, 
Kindly help...


Regards,

FarhanZ 

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