Diagnosis
The syntax check found an error in a variable definition.

System Response
The cursor shows where in your entry the error occurs.

Procedure
You have entered names for object-specific or characteristic-specificvariables in a constraint, for example, such as: ?T and ?L:
?T IS_A POST
WHERE ?L = LENGTH
These names must be valid keys:

• They must begin with a letter.


• They can only contain alphanumeric characters.


• Special characters are not allowed, except for underscore ('_').


• The expression cannot be longer than 30 characters.


• You can enter a query ('?') in front of the name.

Correct the variable name at the cursor. See also other possible causesof error (messages).