It appears as though the "built-in" settings in the GUI and in the default property examples for establishing an external system definition for a message queue contain a property of secretyKey instead of secretKey, which I assume is just a mistype.

I'm not sure that the internals actually are wrong though, I think it may just show up incorrectly in the GUI (including not providing the means to set the right property when adding a new external system definition).

We haven SQS CLC and it seems to work, but using the key in secretKey as one would expect.