The RDA Repository Audit and Certification DSA–WDS Partnership Working Group (WG) produced a two-part recommendation, one of which includes a Catalogue of Common Procedures for certification. The goal of the effort was to create a set of harmonized Common Procedures for certification of repositories at the basic level, drawing from the procedures already put in place by the Data Seal of Approval (DSA) and the ICSU World Data System (ICSU¬-WDS). These procedures are intended to support the implementation of the Catalogue of Common Requirements developed by the WG to harmonize the certification criteria previously established by the DSA and ICSU-WDS.