I get this exception while creating scope for few tables all those tables are huge in design
If you are using CustomBinding then you would rather need to make changes in httptransport element. Set it as
<customBinding>
<binding ...>
...
<httpsTransport maxReceivedMessageSize="2147483647"/>
</binding>
</customBinding>
My solution was to use the "-OutBuffer 2147483647" parameter in my query, which is part of the Common Parameters. PS C:> Get-Help about_CommonParameters -Full