The method cited in an Open CA Experience Profile Milestone application must be a Recognized Method. If the method you’ve used is not currently recognized, you will need to submit it for recognition, either in advance of or in conjunction with your Experience Profile application.
To submit a new method for recognition, you need to complete a Method Recognition form. The template, along with instructions for requesting recognition for a new method is available at: https://certification.opengroup.org/openca/methods
A review board will assess your chosen method against the published conformance criteria for methods. This review normally takes several weeks. The Certification Authority will notify you of the outcome.