The SNB implements its monetary policy by using several instruments, including repurchase agreement (repo) transactions. The SNB conducted test repo transactions involving tokenised assets and wholesale central bank digital currency. These so-called digital repos were settled on a distributed ledger technology (DLT) infrastructure. The tests revealed that settlement of repos on a DLT-based infrastructure is feasible, and provided insights into the corresponding challenges. Specifically, integrating a DLT-based infrastructure into today's money market as in the test setup presents challenges related to market fragmentation, the need for enhanced collateral management capabilities, and the harmonisation of communication standards.