The UPSI data is required to be kept recorded by maintaining a structured digital database which provides time stamping and internal controls & checks, a critical one being non-tamperability. These features would not be viable in Microsoft Excel or any other regular spreadsheeting software given the lack of internal controls and checks, lack of audit trail and the high tamperability of data. One of the reasons Affinis(SDD) is considered compliant is because it provides secure audit trails, anti-tamperability and time-stamping.