Your company's fiscal year end date is used to establish the time frame for questions you answer in the platform.  When this value is over 18 months old, you'll be prevented from making changes directly to your answers, and you will see a grey titlebar indicating that.

To ensure that your answers are accurate, you need to create a new assessment to report on your most recently completed fiscal year. All existing answers will be transferred for you to confirm or update in the new assessment. Please note that you will no longer be able to change answers on your current assessment.  

Navigate to your dashboard and follow instructions on the card titled Fiscal Year End Date - Update Required.