Steps For Creating SAP User

SAP User Creation:

Go To SU01 T.code

User Maintenance Initial Screen

In Address  give the details

Maintain User

In LOGON data

User Logon Data

Save it.

End of User Creation.

Notes:

1) When I request to create new SAP User by using user copy function, should I just create the user acct in DEV and transport it to PROD System? If yes, how could I do that?

You can create user in DEV and then make remote client copy to PRD system using SCC9 t-code. Here you can choose user accounts and authorizations for the copy. (Remark: Data will be overwritten in target system when copied).

You can also use client export/import (SCC8 / SCC7).

But, When you do the client import from the exported files using STMS, you will have to select only one of the transport requests and then STMS automatically selects the other requests for you.

Then it will show you the different transport requests that you have created during your export, the client copy profile and the target system and client. The customizing and application data is deleted in the target client before copying for all profiles except SAP_USER. This is technically unavoidable (and hence the data will be overwritten).

So, if you can afford overwriting of user data in target client, you can go with the above procedure.
 

2) When I request to create new SAP User by using user copy function, can I just create it on PROD System only? If yes, what is the impact?

Using  user copy in SU01, you can copy one user to another user only in that client and is confined to that system only. So yes, If you want 2 or more users to have same authorizations, profiles, etc., you can choose this in PROD system.
 

3) When using User copy function to create new user acct, should I select all parts (like address ,defaults, reference user, user groups etc.) of the existing user to be cloned to new user acct?

It depends. If you want user to be in same group, then you can choose user groups. If you want them to have same authorizations, you can choose roles and profiles. If you want them to have same company address and others, you can select address and so on.

Also, below link provides required steps in case you choose local/remote client copy:
http://www.gotothings.com/bc/client-copy-by-using-scc8-and-scc7.htm

SAP BC Tips

See Also
Retrieving Infotype Auth For Particular User

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