Hi,
On Help for Error number 1 i read:
File "name" does not exist (Error 1)then "name" is a usefull parameters,
but for various command i see on MESSAGE() only:
File does not exist.and SYS(2018) is empty.
this is not a banal problem
because for this simple program:
....
APPEND FROM FILENAME1
APPEND FROM FILENAME2
....
the ERROR(),MESSAGE() not resolve the ambiguity,
and LINENO() is a very panic solution.
The only way is TRY/CATCH every single line,
or write the filename on a variable ( i build my error parameter )
Fabio