Before: Your proposal must include a Data Management and SharingPlan (DMSP), which will describe your plan for how the scientific data generated by your research will be preserved, made accessible (or explain why it is not possible to share, if there are privacy or other reasons preventing this).
After: Your research data must be placed in a digital repository named in your DMSP. According to the NIH, "NIH will expect funded researchers to deposit data in appropriate, existing, publicly accessible repositories before considering other means of making data available. Researchers will be expected to describe any use of data repositories in their data management plans."
Learn more at the NIH website: https://sharing.nih.gov/data-management-and-sharing-policy/planning-and-budgeting-for-data-management-and-sharing/writing-a-data-management-and-sharing-plan