On the AIX platform, when attempting to reset the password on a managed account, the below errors are shown. The user account exists on the target system.
"Reset Password" logs
[DD/YY/YYYY HH:MM:SS] Host unreachable or invalid account name
[DD/YY/YYYY HH:MM:SS] An error occurred changing the password for accountname on systemname
"Check Password" logs
[DD/YY/YYYY HH:MM:SS] Host unreachable or invalid account name
[DD/YY/YYYY HH:MM:SS] Unable to connect to AIX_7_1, or the account accountname does not exist or is disabled.