bitcoin/doc/release-notes-15620.md

Updated RPCs

• The -maxtxfee setting no longer has any effect on non-wallet RPCs.

  The sendrawtransaction and testmempoolaccept RPC methods previously accepted an allowhighfees parameter to fail the mempool acceptance in case the transaction's fee would exceed the value of the command line argument -maxtxfee. To uncouple the RPCs from the global option, they now have a hardcoded default for the maximum transaction fee, that can be changed for both RPCs on a per-call basis with the maxfeerate parameter. The allowhighfees boolean option has been removed and replaced by the maxfeerate numeric option.