And what should I do next, after getting the SOC?
You have 60 days or the remainder of the 1-year period following the decision you appealed, whichever is later, to opt in to the modernized system by submitting one of the following forms and checking the SOC/SSOC opt-in box.
Let's say I missed the deadline for submitting my request. What should I do then?
You could add new and relevant evidence and file a Supplemental Claim, for example.