Complex sentence: Since 1994 the Court has been required to provide a "declaration of assurance", ever since then they have been unable to provide it due, refusing to endorse large parts of the budget despite on declaring the accounts to be "reliable".
Split into simpler sentences: Since 1994 the Court has been required to provide a "declaration of assurance". This has proved a problem due as ever since then they have been unable to provide it due, refusing to endorse large parts of the budget despite on declaring the accounts to be "reliable".