Success Criterion 3.3.1 Error Identification Understanding Error Identification | How to Meet Error Identification (Level A) If an input error is automatically detected, the item that is in error is identified and the error
      is described to the user in text. Success Criterion 3.3.2 Labels or Instructions Understanding Labels or Instructions | How to Meet Labels or Instructions (Level A) Labels or instructions are provided when content requires user input. Success Criterion 3.3.3 Error Suggestion Understanding Error Suggestion | How to Meet Error Suggestion (Level AA) If an input error is automatically detected and suggestions for correction are known, then the suggestions
      are provided to the user, unless it would jeopardize the security or purpose of the
      content. Success Criterion 3.3.4 Error Prevention (Legal, Financial, Data) Understanding Error Prevention (Legal, Financial, Data) | How to Meet Error Prevention (Legal, Financial, Data) (Level AA) For Web pages that cause legal commitments or financial transactions for the user to occur, that modify or delete user-controllable data in data storage systems, or that submit user test responses, at least one of
      the following is true: Reversible Submissions are reversible. Checked Data entered by the user is checked for input errors and the user is provided an opportunity to correct them.