Keep optional questions optional when an answer is wrong

What to change

Ask the supplier to let people either correct an optional answer or clear it and continue, unless the practice has a genuine requirement explained in advance.

A worked example

Illustrative example

An optional organisation website rejects an incomplete address. The visitor can either provide the complete address or clear the field and continue.

Healthcare website design showing connected desktop and mobile service and enquiry layouts. — Make the service and next step clear on every screen.

Healthcare website accessibility illustrated by a focus outline, keyboard key, contrast samples and form. — Review keyboard access, contrast and understandable form fields.

Why this matters to your practice

Optional should mean that a visitor may leave the answer out. It does not mean an incomplete answer must be accepted, but the route back to a blank box should remain clear. Consider a practice asking for a website address from business clients while also accepting personal enquiries. Someone who starts typing and changes their mind should still continue. Ask reception to check that the correction wording offers the right choice rather than accidentally demanding information you do not require.

How to check the result

Accept when the interface accurately offers both recovery routes and does not change the original requirement after a failed attempt.

A mistake to avoid

An error phrased as Enter your telephone number accidentally turns an optional question into a perceived requirement.

Turn reading into a next step

Your action checklist

Work through these checks with your team or supplier. Tick the ones you have resolved and leave unknowns open.

Checks to discussEnter an invalid fictional value in an optional telephone or website field and submit. Read whether the message explains that correction or removal is possible.Clear the field completely and submit again. Ask the supplier to check that stale answer checking or hidden whitespace cannot keep the empty answer in error.Return to enter a valid value and repeat the submission. Confirm both permitted routes work and the receiving system interprets an empty answer consistently.

Your answers and notes

Record what you know, what is still missing and the answer you need from your team or supplier.

What happens next, and who will do it?

Use project decisions only, without personal, patient or confidential details. Entries stay in this page and are not submitted to Kay & Co. Copy or download before leaving; this page does not save your notes.

Related guides

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