MIS error

Hi. just want to check something.
when we submit a transaction through MIS, and we get an error message that says com.wm.mis.api.MISInvalidTransactionException - invalid transaction name.

What is this error due to?
1)Failed configuration to mainframe?
2) Wrong configuration / development effort in ‘developer’?

Please advise. Does this represents if we’ve managed to connect to m/f?