I’m trying to create an internal table assembled from the lines of two internal tables of the same type using table comprehension syntax. Seems simple but I can’t do it:

data(lt_fcat) = VALUE lvc_t_fcat( for i in lt_fcat1 ( i )
                                  for j in lt_fcat2 ( j ) ).

Gives a syntax error: Unknown component “for” (on the second for).