From the Executive Summary: 

Engagement sessions took place between July 2023 and January 2025. Their purpose was to gather information on various perspectives of interested parties; developments in research data management (RDM) policy and practice, both nationally and internationally; the challenges, needs, capacity and readiness for data deposit in Canada; and what a workable timeline would be for implementing the requirement…

Overall, participants expressed broad support for the data deposit requirement, and agreed on its importance—and that of the RDM Policy as a whole—in advancing research data governance in Canada. It is considered necessary to align Canadian RDM policies and practices with those of other major funding agencies and research partners. Participants believe requiring data deposit and facilitating data sharing in Canada would improve the transparency and reproducibility of publicly funded research and facilitate data reuse, thereby increasing efficiency in Canadian research. In terms of the tri-agency data deposit requirement, input from the community highlighted key insights, considerations and needs in the Canadian research ecosystem at large—including granting agencies, researchers, service providers, institutions (libraries, research offices) and partner organizations. In general, the community expressed uncertainty about its readiness for the requirement but agreed on the importance of depositing and sharing Canadian research data.

Full report: 

https://science.gc.ca/site/science/en/interagency-research-funding/policies-and-guidelines/research-data-management/what-we-heard-report-engagement-data-deposit-requirement-tri-agency-research-data-management-policy