Hi Deborah72
Welcome to the forum.
You might want to have a look at the following FAQ which explains where everything is;
www.benefitsandwork.co.uk/guides-for-claimants/faq/forum ESA is an indefinite award with scheduled reassessment based on the Prognosis Date completed by the assessor in their report, so your existing ESA award continues in payment until a new Decision is made.
The answer to your question is yes it is mandatory to complete the questionnaire, if you kept a copy of your previous questionnaire then use it as a template making any adjustments to your health conditions and prescriptions.
Gary
