Data that does not meet expected format or content parameters required by the Web site.
The intent of this success criterion is to assist users who, because of their disabilities, may be more inclined to make mistakes than users without disabilities.
The following combinations of techniques are deemed to be sufficient by the WCAG Working Group for meeting success criterion 2.5 L2 SC1.
Instructions: Select the situation(s) below that match your content. Beneath it, are the option(s) that are known and documented to be sufficient for that situation. For the technology-specific techniques, see the options for the technology you are using listed immediately below.
Situation A: If a form contains both required and optional fields:
Identify input fields which are required in order to complete the task.
Situation B: If a form contains fields for which only certain user responses are valid:
Provide feedback to the user in text when invalid responses are provided by the user.
Editorial Note: Linked items point to the techniques in the current draft, which need additional work. Also, above titles do not match the titles in current drafts.
Although not required for conformance, the following additional techniques should be considered in order to make content more accessible. Not all techniques can be used or would be effective in all situations.
Identifying typing errors helps users who are blind, individuals with motor disabilities who may press keys by mistake, and those with certain types of learning disabilities who have difficulty writing text.
Certain disabilities make it more difficult to operate input devices, resulting in more input errors. For example, individuals with limited motor functions are more likely to make errors when they operate a mouse or a keyboard. Speech recognition systems may find it more difficult to recognize the speech of individuals with speech disabilities. Features that assist in recognizing and correcting errors benefit individuals with these types of disabilities.
An airline web site offers a special promotion on discounted flights. The user is asked to complete a simple form that asks for personal information such as name, address, phone number, seating preference and e-mail address. If any of the fields of the form are either not completed or completed incorrectly, the user is warned of the input error. The user is then presented with the same form, all previously and correctly entered information is still available. The user is asked to make corrections to any form field marked with a red arrow or two asterisks. Note: color alone is not used to indicate errors.