Medical journals, police reports, and company registrations are all example of records, recorded information. Many organizations make a change from paper based records to electronic records. One key characteristic of records is that they are going to be preserved for long time, some forever. Both the Swedish Agency for Public Management and the Swedish Emergency Management Agency have identified preservation of electronic records as a problem, needed a quick solution. A record should be able to serve as evidence over actions and transactions, and should support accountability. For this must records be reliable and authentic, i.e. be trustworthy. Questions of immediate interest are how should information systems be designed and developed to maintain trustworthiness in electronic records? And what quality requirements are needed for both electronic records, and for information systems? Non functional requirements are about quality issues for future systems and software. In this research are the interest quality requirements, a type of non functional requirements, for electronic records. The aim of this research was to study a development project of an electronic record management system/electronic archive system, in order to identify quality requirements needed for maintaining trustworthiness in electronic records over time. A seven month case study has been performed, following a development project at Swedish Companies Registration Office, a development project of an electronic archive system solution. The collected empirical material resulted in a set of six different quality requirements for maintaining trustworthiness in electronic records. The identified quality requirements are a first step towards identifying general quality requirements for electronic records. Some of the quality requirements are valid both for the electronic record it self, and for the electronic archive system.