Array requires exact ‘<number>’ indexes
Too many or too few indexes are specified when using an array.
Specify as many indexes as there are dimensions assigned to the array.
PROGRAM PLC_PRG
VAR
arr1 : ARRAY[1..2,1..3] OF INT;
END_VAR
arr1[1] := 5;
--> C0048: Array requires exactly 2 indexes
arr1[1,2] := 5;