The unloadwallet RPC unloads the wallet referenced by the request endpoint otherwise unloads the wallet specified in the argument.
unloadwallet ( "wallet_name" load_on_startup )
*bitcoin-cli help unloadwallet
unloadwallet ( "wallet_name" load_on_startup ) Unloads the wallet referenced by the request endpoint otherwise unloads the wallet specified in the argument. Specifying the wallet name on a wallet endpoint is invalid. Arguments: 1. wallet_name (string, optional, default=the wallet name from the RPC endpoint) The name of the wallet to unload. If provided both here and in the RPC endpoint, the two must be identical. 2. load_on_startup (boolean, optional) Save wallet name to persistent settings and load on startup. True to add wallet to startup list, false to remove, null to leave unchanged. Result: { (json object) "warning" : "str" (string) Warning message if wallet was not unloaded cleanly. } Examples: > bitcoin-cli unloadwallet wallet_name > curl --user myusername --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "unloadwallet", "params": [wallet_name]}' -H 'content-type: text/plain;' http://127.0.0.1:8332/