Yes, you can make changes to an already certified ROL but, if changed, the list must be re-certified prior to the Rank Order List Certification Deadline for it to be used in the Match. You should not wait until the last minute to enter and certify your list. Technology glitches can occur and the ROL Deadline is firm. We also recommend that you do not make last-minute changes to your ROL. Most last-minute changes are not well thought out, and participants frequently regret them. The NRMP will not change or edit rank order lists.