Compiler error C0136

Message: ambiguous use of name '<variable name>'

Possible error cause: A variable is declared in multiple GVLs.

Error correction: Qualify the variable with the desired GVL.

Example of the error:

PROGRAM PLC_PRG
VAR
	j : INT := g_i;
END_VAR

GVL1:
VAR_GLOBAL
	g_i : INT;
END_VAR

GVL2:
VAR_GLOBAL
	g_i : INT;
END_VAR

--> C0136: ambiguous use of name 'g_i'

Error correction:

Example:
j : INT := GVL1.g_i;