We are adding two different provisioning roles with different templates on same user, instead of creating new account IM is updating the existing account.
Release : 14.4
Check the "Use Existing Accounts" feature, if it is enabled, then disable it and it should create new account.
For more information, please check the following documentation:
Use Existing Accounts:
https://techdocs.broadcom.com/us/en/symantec-security-software/identity-security/identity-manager/14-4/reference/advanced-configuration-options/domain-configuration/synchronization-parameters.html