During the install the PWDtool fails when special characters are used for the database password.
Release : 14.4
Component :
There is was a known problem in 14.4 where special characters would cause the PWDtool to fail which is why your a combination of your special character passwords are failing.
DE505991
https://techdocs.broadcom.com/us/en/symantec-security-software/identity-security/identity-manager/14-4/Release-Notes/Fixed-Defects/Fixed-Defects---14-4-1.html