Change in email notification for Login credentials

Problem Statement:
Workterra allows only unique username in system under a particular company. This username generation is driven on basis of ‘Security’ customization. Consider username policy specified as email address [Everything in-front of @ symbol in the email address will be considered as userid ].

System has an existing employee “Name : Jack Smith, Email: Jack.Smith@gmail.com, Username: jack.smith”,
now a new employee record is added with following details – “Name : Jack Smith, Email: Jack.Smith@yahoo.com”. At this point system by default appends a random unique numerical extension to this employee’s username such that username for this employee will be “jack.smith4321”.

The notification email sent to employee contains only credentials policy as below –
UserName : Your Username is your Email ID.
Password : Your Password is first 4 letters of your last name, followed by first 4 letters of your first name.
For example:
Name:John Doe
User ID:John.Doe
Password:doejohn

Here, second employee will never be able to login to system using these instructions as it says to use ‘jack.smith’ and might end up locking another employee’s account after 4/5 invalid attempts.

Change in email notification:
We are now adding numerical extension to the email notification that is sent to employee [only in case where this numerical extension is added by system ] such as –

UserName : Your Username is your Email ID followed by number “4321”.
Password : Your Password is first 4 letters of your last name, followed by first 4 letters of your first name.
For example:
Name:John Doe
User ID:John.Doe4321
Password:doejohn