3
If Record.CalcFields(Field) is used, compiler or CodeCop should check if the refenced field is FlowField.
Currently this will end in a runtime error.
Category: Development
STATUS DETAILS
Declined
Ideas Administrator

This seems like a missed scenario in the compiler and an internal bug has been created.  Note, the Ideas site is for product suggestions that go through voting and has longer turn around with regards to being delivered, so closing this entry (given not a product idea). Please log bugs and issues for Visual Studio Code development tools and AL on the https://github.com/microsoft/AL/issues site (no need for this one). 
Thank you for providing feedback.