Hello Kris,
first check which users are exists on the database
>sqlcli -d BAP -n devbap -u SUPERDBA,<pwd> select username from users
If the user exists try to set the password new to ensure that you have the correct one.
>sqlcli -d BAP -n devbap -u SUPERDBA,<pwd> alter password SAPBAP <pwd>
Then try to connect again with sqlcli an user SAPBAP
Burkhard