SolvedETASSUM11600 | Introduction to Tax Advantaged Share Schemes: Setting up a scheme: Amended returns
From HM Revenue & Customs · Employee Tax Advantaged Share Scheme User Manual
A penalty of up to £5,000 may arise if a return contains a material inaccuracy which is careless or deliberate and is not corrected by an amended return.
A company must submit an amended return it if becomes aware:
that information was omitted from the return submitted,
that the submitted return includes something that should not have been included, or
of any other error or inaccuracy in the return.
Once the company has identified the inaccuracy, it must submit the amended return “without delay”.