Why we use logical system

dear all
i want to know why we use logical system .?????????????

Hi Vivek,
Logical system is unique system id to communicate with each SAP Systems in ALE network
You can think the way , you will  receive ROLL Number or User ID from college / office even though you have a name your own . Same way sap system need a unique identifier . Most of the time it is followed by naming convention as <SID>CLNT<Clientnumber> . Looks like GPRCLNT100
If you go to Tcode SALE , then you will get the documentation as follows
Logical Systems
The distribution of data between systems makes it necessary to identify each system as a unique logical system.
A logical system is an application system in which the applications are coordinated to work in one common database. In SAP terms, a logical system corresponds to a client.
The logical system is important in the following SAP areas:
Communication between two or more logical systems
ALE business process (e.g. Cost Center Accounting): defines the system in which a particular application is running. Only in this system can master data can be changed.
Regards,
Aparna

Similar Messages

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    Hi,
    The issue is with the fact that this Logical System Name has been assigned to another Business System ( say Buss System X) .And you want to use this same Logical System Name for the sender JMS service( Buss System Y) as well , correct?
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  • Why u  use logical databases

    how u used logical database?how is data transferrd to program?corresponding statement in LDB?

    Hi,
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    TABLES: lfa1,
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            lfc1,
            bkpf.
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    FORM init.
    ENDFORM.                                "INIT
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    Call event GET LFB1
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      SELECT * FROM bkpf
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                 AND gjahr      IN sgjahr.
        PUT bkpf.
      ENDSELECT.
    ENDFORM.                                "PUT_BKPF 
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    Sesh

  • Why we use Project system?

    Hello Gurus,
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  • Use of Logical System

    Hi GRC Experts:
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    Logical System 2: SRM Logical System
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    Function Authorizations to be uploaded are srm_function_actions and srm_function_permissions
    Logical System 3: APO Logical System
    All the APO physical Systems (PA1, PA2, etc...)
    Function Authorizations to be uploaded are apo_function_actions and apo_function_permissions
    Logical System 4: ALL Systems
    All the physical systems (PR1, PR2, PS1, PS2, PA1, PA2....)
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  • Logical System in IDOC-XI scenario

    Hi,
         I need help to understand few things in IDOC-XI scenario, could any one help me in this regard.
        we use Adapter specific identifiers to map services, we have following type of identifiers 1) Sys.ID & Client No.  2) Logical System. 
    my questions are
    a) Are we use Logical System in B to B scenario ?
    b) Are we use LS in reference to the SAP system or Non SAP system ? if a non SAP system....how a non SAP system send an IDOC and why a non SAP system receive an IDOC ( conversion is possible in XI ) ?
    Thanks and Regards
    Mahesh.

    Hay Kumar,
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  • Business System and Logical system

    Hi Experts,
    in SAP if we want to exchange the Data between the systems we use Logical Syestem. Why we  need Logical systems basically? and Why need Business system in XI?
    Thanks,
    Manoj.

    hi manoj,
    check this link.
    http://help.sap.com/saphelp_nw04s/helpdata/en/42/c817d9d2296bb2e10000000a1553f6/frameset.htm
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    srinivas

  • What is logical system in ALE

    Dear all
    I still confuse with Logical System in ALE where we already have Client.
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    So why we need Logical System instead just use Client ?
    Regards,
    Halomoan

    I think this is what you want to read:
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    That is why SAP recommends to use the notation <SID>CLNT<CLT> to set the logical system. For example, assume you have client 400 for system QA1 and you have client 400 for system DV1. Then the logical system name would be:
    for QA1/400: QA1CLNT400
    for DV1/400: DV1CLNT400
    The logical system is used in the IDOCS that you transmit from one system to the other. So with this, you know the source system of the IDOC, and this tells you where the business document was created.
    Using only the client as identifier is not enough, because you can have the same client number in several systems.
    Nevertheless, you should read the documentation!!
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  • Logical system value in a BAPI

    i am using a BAPI, its asking for logical system . How do i know that value ?

    Logical system- 'logical system' is used to identify an individual client in a system, for ALE
    communication between SAP systems. That's why you see a field for 'logical
    system' in the client master data in SCC4 (table T000). You use logical systems
    in ALE config - this should be documented further in the IMG guide, or SALE and
    BALE transactions.
    Check the link
    http://www.sap-img.com/bc059.htm
    please use Function Modules for this task:
    CALL FUNCTION 'OWN_LOGICAL_SYSTEM_GET'...
    You can also check the table -
    The field is T000-LOGSYS. (Logical System)
    Regards,
    Amit
    Reward all helpful replies.

  • Changing Logical System Names

    Currently, each instance(SID) in an entire landscape all have the same logical system name and the RFC name that corresponds is all the same.  You really don't know what system the RFC is pointing to until you open it up and see which server, etc. is listed in the RFC.  So, we are working on a project so that each instance has it's own unique logical system name.  The biggest problem we are concerned about is making sure that we change all the places where these definitions exist.  I have a small list of transactions that need these items changed (SM59, SALE, SCC4, RSA1, SMQR, SMQS, SBIW, SPRO (this is a tough one)).  We realize we will depend on our application teams heavily to know where they changed any configuration to use logical systems.  My question is to see if anybody has done this type of change, if they have any tips/guidance, to see if anybody can give some good direction on where to find all the places these LS names are used, and if anybody else can throw out any other transaction suggestions that we should check.  Thanks in advance.
    -Marsha

    Marsha,
    I think you should examine the reasons why it would not work before asking if you can do it.  One reason for us was archiving.  We regularly archive off data only keeping the last 3-7 years of data in the system for some tables.  Changing the logical system ID for us would mean it would be impossible to reload some of that archived data, without customizing or a new development effort.
    So if your questions is can you do it?  Yes, you can do it. 
    If the question is should you do it?  .....Well, then you need to examine why or why not in your own environment.  There are likely to be pitfalls especially if its usage is widespread at your company as you indicate.
    -jwise

  • Logical System for RFC-Business system?

    Hi,
    I want use RFC adapter for my scenario like File to RFC.
    The query is like, is there any importance to use Logical system for my Business System which is using for my RFC Adapter in my communication channel.
    Regards
    Gopi

    logical system name is relevant only for Idocs, but it is always a good idea to maintain the technical and business systems with all the information you can provide.
    you can check the logical system names of ABAP application servers at bd54 tx code.
    Regards,
    Henrique.

  • Partner type -only logical system?

    Hi!
    I have a scenario where I want to send an idoc to SAP using XI idoc adapter. It works fine using a partner type "logical system" (LS). But now i would like a scenario where the partner i a type "customer" (KU). I have defined a new business system in the SLD as a sender (just in case) and the partner of course exist in SAP under customers). I have also mapped the korrekt values to the IDOC (sndprt, sndpor and so on) -but these are of course overwritten using the values from the SLD (which only operates using logical system). Is there a way to integrate using a partner of type customer? I have made a similar scenario work using the Business Connector -what is the missing link to make it work in XI?
    best regards

    Hi Martin,
    > I have a scenario where I want to send an idoc to SAP
    > using XI idoc adapter. It works fine using a partner
    > type "logical system" (LS). But now i would like a
    > scenario where the partner i a type "customer" (KU).
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    Regards
    Stefan

  • Logical System Name Usages

    Hi,
    In Connector properties there is one property called "Logical System Name" what is the purpose of this.
    regards
    mmukesh

    Hi,
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    1. Systems of the Central User Administration (CUA) are referred to using logical system IDs. In the SAP sense, a logical system is a client. Therefore you must first set up logical system names that you then assign to the clients in the SAP systems.
    2. System in which applications sharing a common data basis run. In SAP terms, a logical system is a client in a database. Messages are exchanged between logical systems.
    Regards
    Srinivasan T

  • Logical System,Business System

    Hi Gurus,
    What is Logical System? n What is Business System?
    Wt is the Difference betweent these two?Can you explain me in detial.
    thanks in advacne.

    Hi Kumar
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    System in which applications sharing a common data basis run. In SAP terms, a logical system is a client in a database. Messages are exchanged between logical systems.
    Systems of the Central User Administration (CUA) are referred to using logical system IDs. In the SAP sense, a logical system is a client. Therefore you must first set up logical system names that you then assign to the clients in the SAP systems.
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    Business systems are logical systems that function as senders or receivers within the SAP Exchange Infrastructure. You configure business systems in the SAP System Landscape Directory (SLD). A business system is always associated with a technical system (here: SAP Web AS ABAP system).
    Configuring an SAP Business System
    http://help.sap.com/saphelp_nw04/helpdata/en/87/7277e8fba34421a45d97a41ec27381/frameset.htm
    http://help.sap.com/saphelp_nw04/helpdata/en/c8/5aa2a0deb91548a1842f8485dee4a2/frameset.htm
    Defining/Setting Up a Logical System
    http://help.sap.com/saphelp_nw04/helpdata/en/aa/b4b13b00ae793be10000000a11402f/content.htm
    Assigning a Logical System to a Client
    http://help.sap.com/saphelp_nw04/helpdata/en/cf/b4b13b00ae793be10000000a11402f/content.htm
    regards
    sandeep
    ih helpful kindly reward points

  • RAR logical system

    If I've only one R/3 backend system, can I still define it in a logical sytem in RAR?
    Thank you,
    Partha

    Yes. You can. You will see advantage of using logical system function if you have more than one physical system. Please see below.
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    Thanks,
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