Help & Documentation
Definition: Even though it is better if the system can be used without documentation, it may sometimes be necessary. Any such information should be easy to search, focused on the user’s task, list concrete steps to be carried out, and not be too large.
Layman terms: Provide help for users to input the correct data in the field, usually found in the “Address” section.
Where you can apply the usability heuristic when designing e-commerce website: