Proceed as follows to enter a validation rule for a characteristic in method maintenance:
Place the cursor on the characteristic line on the screen Maintain Charact. Structure and select the menu options
You reach the dialog box Maintain Validation Rule .
Enter the relational operators and the corresponding values and press ENTER .
The validation rule is allocated to the characteristic.
If you want to delete the existing validation rules, press the function key Delete rule in the dialog box Maintain Validation Rule.