20000 to 20999 - Externally written plug-in messages
The messages between 20000 to 20999 are reserved for use by externally written plug-in messages.
To avoid confusion if multiple plug-ins choose the same error code, include some identification in the associated text loaded into the status array of the externally written plug-in. For example, prefix the error message with "Employee Plug-in:" or "My Plug-in:."
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