All the WS-RA specs define the term "generate" as follows [1].

I like to suggest two changes as proposed in [2]:

1. Editorial spelling - Change "futher" to "further".
2. The term "MAY NOT" is not generally used. I have suggested a different phrase.

Both the changes are highlighted within **.

[1] The term "generate" is used in relation to the various faults defined by this specification to imply that a fault is produced and no futher processing SHOULD be performed. In these cases the fault SHOULD be transmitted. However, there might be reasons when a compliant implementation can choose not to transmit the fault - for example, security concerns - in these situations the fault MAY NOT be transmitted.
 
[2] The term "generate" is used in relation to the various faults defined by this specification to imply that a fault is produced and no *further* processing SHOULD be performed. In these cases the fault SHOULD be transmitted. However, there might be reasons when a compliant implementation can choose not to transmit the fault - for example, security concerns - in these situations the *service MAY choose not to transmit the fault*.