An Author Accepted Manuscript (AAM) is defined as the version of the work as accepted for publication, including all changes made during the peer review process. This differs from the Version of Record (VoR), which is the version of a journal article that has been made available by any organization that acts as a publisher by formally and exclusively declaring the article “published”.
An example of the AAM being used as part of Rights Retention wording (in alignment with Plan S) in a submission to a peer-reviewed journal:
“This research was funded in whole or in part by [Funder] [Grant number]. For the purpose of Open Access, the author has applied a CC BY public copyright licence to any Author Accepted Manuscript (AAM)version arising from this submission.”