Legacy SEMP api body for config sync command ```assert-master message-vpn default```

And for completeness you can generate the xsd specs as described here :

To obtain the SEMP v1 Request schema file, perform a GET on the following URI:

http:///SEMP/v1/requestSchema.xsd

To obtain the SEMP v1 Reply schema file, perform a GET on the following URI:

http:///SEMP/v1/replySchema.xsd