The error occurs when lodging a 2026 return. This is currently under investigation by our development team. Related ArticlesTax New Zealand: Autocalc Returns ProcessingTax New Zealand: Error: 'Filing obligation not met' when lodging returnTax New Zealand: Locate the nztaxlog.txt fileNew Zealand Tax: Error 'Cannot read properties of undefined (reading 'submissionKey')'Tax Australia: CMN.ATO.AS.EM92025