Activate Client

This API is used to activate a client.
Clients are initially created in a 'pending' state, and this API facilitates their transition to an 'active' state, making them approved members of the financial institution.
To activate a client, you need to provide the client's unique Id.

If the client happens to be already active this API will result in an error.

Before activating a client, check block-activation-of-unverified-clients configuration.
If enabled, you need to verify the client-verify-kyc first.