553 BADSSLMODE Invalid sslmode value.
Explanation:
The value obtained for sslmode, either from the environment variable, connection string, or clispb.dat, is not one of the valid values.
Remedy:
Correct the value of sslmode to use one of the valid options: disable, allow, prefer, require, verify-ca, or verify-full. See the CLI reference guide, Chapter 18, Securing Connections using TLS for documentation regarding the sslmode parameter.