Basic Customization > User Interface Customization > Presenting Information in the UI > UI Validation > Solutions > Miscellaneous Tips, Tricks, and Things to Avoid
  
Miscellaneous Tips, Tricks, and Things to Avoid
This section contains the following topics:
Working with Access Permissions
Rule of Thumb: One Validator per Action/Attribute/Component
Do Not Inflate WTReferences
Handle Null Values
Use the @Override Annotation
UIValidationCriteria.toString()