eplacement transaction.
The command will fail if the wallet or mempool contains a transaction that spends one of T's outputs.
By default, the new fee will be calculated automatically using the estimatesmartfee RPC.
The user can specify a confirmation target for estimatesmartfee.
Alternatively, the user can specify a fee rate in sat/vB for the new transaction.
At a minimum, the new fee rate must be high enough to pay an additional new relay fee (incrementalfee
returned by getnetworkinfo) to enter the node's 