What does "observed" mean here in the AXI standard?

[zzzhhh]

I'm reading section A6.4 "Slave ordering" of AXI standard, but I don't quite understand what the word "observed" mean in the standard text:

Can you give me an explanation, preferably with a concrete example? Thanks.

 

[dpaul]

Concrete example, no.
What I understand by 'observed' is that the Slave must keep a track of it.
i.e. The Slave keeps a track of a write transaction for which it has already issued a response. How this is implemented I do not know. And this tracking information should be accessible during further write or read transactions.