ID 20791Read string is too long. Description The identifier (name) of a variable is too long. The type of variable can be self-defined variable (V.S., V.P. V.L.) or external variables(V.E.). Response Class 2 Abort NC program processing. Solution Class 3 Check and modify the identifier of the variable. Parameter %1: Upper limit value [-] Error type 1, Error message from NC program.