Thank you for your post.
The ExecuteSQL script step is not available through the server. When you go into Manage Scripts and create a script, in the bottom left pop under "Show Compatibility", select "Server". This will then display all script steps available through the Server.
Please explain in greater detail what you are trying to accomplish. There may be some forum members who have encountered the same problem and have a workaround.
I shouldn't have titled the message that way. The rest of the message explains more clearly what I'm asking. Certainly the script step can't be used on FMS. My question is, does this also apply to the ExecuteSQL function in the plugin API? Believing that to be the case, I'm curious whether anyone has any workaround to cause ExecuteSQL (the C function in the Plugin API specifically, although success with the script step could point to a solution for the function call) to be executed on the server.