Certificates and keyring have been set up for secured FTP, but the FTP log shows that it can't find the ring:
FR0469 authClient: init failed with rc = 6 (Key label is not found)
The usual cause for this message and this return code (rc=6) is that no certificate has been defined as the DEFAULT value in the keyring. Update the keyring record to specify the DEFAULT certificate (the personal, or server, certificate for the FTP address space already defined in the keyring).
To Change KEYRING FTP1.RING to have certificate FTP1.CERT1 as the default certificate the command would be as follows...
SET PROFILE(USER) DIV(KEYRING)
CHANGE FTP1.RING DEFAULT(FTP1.CERT1)