SSH access requires password even if its on Credential Vault

Hi All,

Im having a problem when a user access SSH (Portal or via PuTTy using Port 2222) Some servers asks for a credential while some doesnt. All password are on the Credential Vault. And its regardless of OS. ie (2 Solaris 10 server; 1 requires a password, the other 1 doesnt) The rule looks like this:

Anyone experienced this issue?

Things to note:
pamprime is a created user on each Non-Windows Server that are on the Non-Windows Server Host Group
pamprime credentials are inputted in the Credential Vault
Account Domain and Credential is Blank
Run User: pamprime (local account)
Run Host: Non-Windows Server (Non-Windows Server Host Group)