Getting Error message: error in an expression in Process model properties at process start form : neither variable(s) or rule(s) found: size

HI,

Try checking yours interface. There will be extra "size" key somewhere whose value either not defined or the key is inappropriately defined in the sail function. Search for "size".

Debug all the blocks. Alsosub interfaces if any.

This error is not in process modelbut in the interface. The interface does not capture these errors.

thank you,

 will try.

I had this error as well; when attempting a related action that goes right to a process start form, the same generic, unhelpful error came up.  When I checked the process model, it gave me a little more, that there was some error in 'showwhen' (can't remember exact error text).  I had to do an expression search and finally found it buried, several layers (child interfaces) down, it was a single error in my keyword syntax (which I prefer), essentially I had a line like this: 'showwhen: showwhen: true' .  Once I corrected that, everything fell into place but it would have helped a LOT if I could know the interface causing the error, and the line number :).

I agree!!

It would be really helpful if the interface causing the error shows up on the error message.(also the line number )