No longer possible to create multisig wallets purely through RPC

[ghost]

Now that multisig is considered unsafe/experimental, you cannot create and use multisig wallets via RPC, there is no command to enable it for the wallet, so it will always fail unless you create a hacky shell script.

[moneromooo-monero]

This is unlikely, given this is tested in functional tests.
Please give more details.

[redox473]

Youve stumbled onto one of the biggest problems with monero, documentation
In the tests you can see they are passing a multisig enable command to prepare_multisig, although the official doc show that RPC call take no params. Use that.
Best of luck