Start by obtaining the complete report from the police agency that investigated the crash. Identify the page and item containing the error, then gather evidence of the correct information, such as your vehicle registration, insurance documents or photographs. Contact the investigating officer or the agency’s records unit and ask how to request a correction or supplemental report. Keep the original report unchanged and submit copies of supporting documents rather than giving away your only originals.

A wrong registration number is different from a disagreement about who caused the collision. An agency may decline to change an officer’s conclusions, and a correction request does not guarantee a revised report. Keep your written request, any response and the evidence supporting your account. A lawyer can assess the report alongside photographs, witnesses and other records when reviewing your car accident claim, rather than treating the report as the complete account of what happened.