Embedding xml/json data in message: why not?

[Alberto Salvati]

Hi, all.

I'm a newbie, so I apologize in advance about:  

1) my question is lazy...

2)  my question has some answer in old messages or in some periodically update FAQ of this group... (it it exists please let me know how I can get it..)..

Question:

It's a "good" idea or not to have this situation with Payload that contains xml/json data, assuming payload is less than 2k..? 

enum MyMsgType {
    UNDEF = 1;
    TYPE_001= 2;

    TYPE_002= 3;
}

message MyMsg{
    string Id = 1;
     MyMsgType   MyType = 2;

     string Payload = 3

}

Thanks in advance for any answer.

Best.

A.