Dynamic Rule Error

Hey everyone I have an issue with Dynamic Rule Error. 
My issue is that in my app I have a number of fields that only are required in certain situations. It reads:

  When (Field) "Last Name" is equal to the value Insurance
    Show Multiple fields
   Hide Multiple fields
   (Issue line) hide field Types of Machines.


Here is the issue I have another List name that requires the Field Type of machines, but when I set up the Dynamic Rule for the second list I get the error, that two rules are effecting the same field. I can't figure out a work around. Does anyone else have a solution to this error.

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Frank Cusack
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