bitcoin/doc/release-notes-34917.md

RPC and Startup Option

The bip125-replaceable key in the wallet transaction RPCs such as listtransactions, listsinceblock, and gettransaction is marked as deprecated. Users still have the option to retrieve this key by passing the -deprecatedrpc=bip125 startup option. Also, the -walletrbf startup option has been marked as deprecated and will be fully removed in the next release. Using this option emits a warning in the logs.