There are two issues here:
First, the error is incorrect:
"; [ERROR] Expected '!ENDTRANS'. [15152]" should state:
"; [ERROR] Expected '!ENDTRNS'. [15152]"
Second, you're getting the error because you have not defined the ENDTRNS row. You need an ENDTRNS definition line that starts with !ENDTRNS just as you have !TRNS and !SPL defined.
Also, note that there is no need to repeatedly redefine the rows. One set of
!TRNS ...
!SPL ...
!ENDTRNS
definition rows at the top of the file is all that is needed.
While this needs to be fixed (would never have worked with any QB version), save yourself a lot of pain by following our recommendations: BRC - QuickBooks 2019 IIF Import Changes and Recommendations
