# ID 21433

Invalid character in the name of the structure element.
Description | User-defined variable types can be defined for the external variables, e.g. for variable structures (see [EXTV]). However, the default name for the structure element (struct[i].element[j].name) contains at least one invalid character. Permitted characters are letters, the numbers 0-9 and an underline.
Response | Class | 2 | The structure element is deleted.
Solution | Class | 3 | Correct the name of the structure element.
Parameter | %1: | Current value [-]
Incorrect name
%2: | Current value [-]
Index i of the variable type definition
%3: | Current value [-]
Index j of the structure element
%4: | Error value [-]
Incorrect name
%5: | Current value [-]
Position of the invalid character in the name
Error type | -