There is no reason that fields can't be named the same in different display records as long as their data types and sizes are also the same. My guess is that additional definitions have been added to the source, and those are conflicting with the display definitions. The fix is to rename the definitions in the program source or to remove them.

But you didn't tell us the error message ID, so we can't be sure what is happening. And you didn't show us any program source, so we don't know what could be done differently.

Tom