noun which may take the genitive case particle 'no'
acknowledged; accepted; agreed
Used in formal or business contexts to indicate that something has been officially acknowledged or approved. Often appears as a no-adjective modifying a noun, e.g., 了承済みの事項 (an acknowledged matter).
その件はすでに了承済みです。
That matter has already been acknowledged.
了承済みの書類を提出してください。
Please submit the acknowledged documents.
承諾済み also means 'accepted' or 'agreed', but 承諾 implies a more active consent or approval, while 了承 is often used for acknowledging information or decisions.
Compound of 了承 (acknowledgment) and 済み (completed, done). The suffix 済み indicates that the action has been completed.