Answer / tapan

dialog, reference, communication, services, system

Answer / giridhar

Dialog user 'A'
Individual system access (personalized)

Logon with SAPGUI is possible. The user is therefore
interaction-capable with the SAPGUI.
Expired or initial passwords are checked.
Users have the option of changing their own passwords.
Multiple logon is checked.
Usage: For individual human users (also Internet users)

System user 'B'
System-dependent and system-internal operations
Logon with SAPGUI is not possible. The user is therefore
not interaction-capable with the SAPGUI.
The passwords are not subject to to the password change
requirement, that is, they cannot be initial or expired.
Only an administrator user can change the password.
Multiple logon is permitted.
Usage: Internal RFC, background processing, external RFC
(for example, ALE, workflow, TMS, CUA)

Communication user 'C'
Individual system access (personalized)
Logon with SAPGUI is not possible. The user is therefore
not interaction-capable with the SAPGUI.
Expired or initial passwords are checked but the conversion
of the password change requirement that applies in
principle to all users depends on the caller
(interactive/not interactive). (*)
Users have the option of changing their own passwords.
Usage: external RFC (individual human users)

Service user 'S'
Shared system access (anonymous)
Logon with SAPGUI is possible. The user is therefore
interaction-capable with the SAPGUI.
The passwords are not subject to the password change
requirement, that is, they cannot be initial or expired.
Only a user administrator can change the password.
Multiple logon is permitted.
Usage: Anonymous system access (for example, public Web
services)

Reference user 'L'
Authorization enhancement
No logon possible.
Reference users are used for authorization assignment to
other users.
Usage: Internet users with identical authorizations

Answer / kishore kumar vuthpala

Dialog (A)
System (B)
Communication (C)
Service (S)
Reference (L)

Answer / dvr reddy

They are 5 users
1. Dialog user:
this is the user who communicate with system interactively
2. Communication User:
it is an RFC user to communicate between two systems.
ex:ALE remote and BW remote users r used to communicate
between R/3 and BW systems
3. System User:
It is used to communicate with in the system
Ex: RFC user to communicate between with in the same system
4. Service User:
It is enormous user which is used to by agroup of users
Ex:DDIC is a service user
5. Reference User:
This is used to provide additional writes to the users.there
are also used to refer & provide additional writes to the
Internet users

Answer / amitesh

dialog user,reference user,communication user,service user,system user.Most of the tickets will get for dialog user in the project 

Answer / syed mahboob feroz ahmed

Hi,
We have Single User and Mass Users.Where Single User
contains whole User Information and Mass Users contain only
user information.

Answer / knreddy

dilog user, syste user, trns por use, like that 5 type of
users

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