Assign a Logical System Name of a production client

Hi everybody,
We have an ERP system (now upgraded to ECC 6.0) that is in productive use since 7 years. Until now, no Logical System Name have been assigned to the production client - the field in transaction SCC4 is empty/blank.
Now we plan to implement a BW, so a test and a productive BW systems have been installed. According to the attached file and content of note 184447 we choose to use "Option 1: Uniform Logical System names clients by system type" for naming convention for LSN's.
All the systems/clients (BW test and productive, ERP test only) now are assigned with corresponding LSN's, except the production ERP client. It is still without LSN and the client is not defined as Source System for productive BW system.
So, my question is:
Should I expect any problems if the LSN of the production client is set up now, after long time, effective productive use?
I would mention that this is infact initial setup, not a change of LSN. Therefore transaction BDLS is not relevant, I think.
Thanks in advance

Hi DB49,
I already did an initial setup of LSN in the test ERP client (that client is copy of the productive ERP client, i.e. the LSN has not been set). And everything seems to be OK.
But the documentation says that ".... In a production system, the logical system must not be changed ...".
"Changed" is not "ïnitial setup" of course, so there will not be any problems I hope, but ...
SCC4 --> LSN field --> F1 -->
"System in which applications run integrated on a shared data basis.
The distribution of data between systems requires that each system in the network has a unique identification. The logical system is used for this purpose.
In the SAP System the client corresponds to a logical system. You can assign a logical system to a client in the client maintenance (choose Goto -> Detail).
The logical system is relevant in the following SAP areas:
ALE general: two or more logical systems communicate with one another.
ALE - ALE business processes (for example, cost center accounting): definition of a system where a specific application runs. Changes to master data can only be made in this system, for example.
Workflow objects: the logical system in which the object is located is always included in an object's key.
When maintaining the logical system, note the following:
The logical system must be unique company-wide. It must not be used by any other system in the ALE integrated group. In a production system, the logical system must not be changed. If the logical system of a document reference is not set to initial and does not match your own, the system assumes the document is located in a different system."

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Same logical system name for two productive systems - BW, PI issues

Dear all,
we have a productive system which serves two companies (different company codes). This system is connected both to BW and PI for both companies.
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As a result of the above procedure we wll have two different productive systems, as required, but we wll have the same logical system name for the two productive systems, which must be both connect to bw and PI.
However as far as I know:
- we cannot connect systems with same logical system name to BW,PI
- we cannot convert logical system name of the one of the two productive systems as they are productive and so this is not supported.
How can we overcome the problem?
Please advice.

> However as far as I know:
> - we cannot connect systems with same logical system name to BW,PI
> - we cannot convert logical system name of the one of the two productive systems as they are productive and so this is not supported.
Right.
> How can we overcome the problem?
Since you split up systems (or plan to) I highly recommend booking an SLO service (http://service.sap.com/slo). Those people have to the tools and the knowlege to help you. I would not do this on my own.
Markus

About assigning logical system name to client

Hi:
    the SAP landscape is:
    CRM DEV CR0 (CLIENT 200)        -
>    CRM PRD CR1 (CLIENT 800)
                  \|/                                                                        \|/
      ERP DEV MZ0 (CLIENT 200)      -
>   ERP PRD MZ1 (CLIENT 800)
   the crm dev is connected the erp dev and the crm prd is connected the erp prd.
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THANKS.
Edited by: Xiaofeng Qiu on Jun 5, 2009 11:27 AM

Hi,
The logical system must be unique company-wide. In a production system, the logical system must not be changed.
Goto SCC4-->Double click on any client number. You will see logical system text. Select it & press f1 you will below information about logical system.
"The distribution of data between systems requires that each system in the network has a unique identification. The logical system is used for this purpose.
In the SAP System the client corresponds to a logical system.
When you maintain the logical system, note the following:
The logical system must be unique company-wide. It must not be used by any other system in the ALE integrated group. In a production system, the logical system must not be changed."
Thanks
Sushil

Logical System and Logical System Name

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I would like to create the following and please tell me how do I go about doing this. I am doing this because I am trying to implement both RFC/Idoc to File and File to Idoc/RFC. The basis admin guys are unavailble at the moment so I am on my own at this moment.
Creating a port(I suppose I need to do this on the R3. What are the steps involved)
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Hi Sonia,
For XI communicating with SAP R/3 through Idocs ALE settings need to be done,
just go through the following steps and Configure ALE :-
SAP XI
1) RFC Destination (SM59)
a) Choose create.
b) Specify the name of the RFC destination
c) Select connection type as 3 and save
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e) Enter the Gateway host as same details above SID/URL.
f) Gateway service is 3300+system number#.
g) In the Logon /Security tab, enter the client user & Password details of Destination system.
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a) Select create new button
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e) Save
3) Load Meta Data for IDOC (IDX2) a) Create new
b) IDOC Message Type
c) Enter port created in IDX1.
SAP R/3
1) RFC Destination (SM59)
a) Choose create.
b) Specify the name of the RFC destination
c) Select connection type as 3 and save
d) In the technical settings tab enter the details SAP SID/URL and system number#.
e) Enter the Gateway host as same details above SID/URL.
f) Gateway service is 3300+system number#.
g) In the Logon /Security tab, enter the client user & Password details of Destination system.
h) Test the connection and remote logon.
2) Create Port (We21)
a) First Select Transactional RFC and then click create button
b) Enter the destination port name as SAP+SID (The starting char should be SAP)
c) Enter the destination client.
d) Enter the RFC Destination created in SAP R/3 towards other system.
e) Save
3) Create Partner Profile (WE20)
a) Create New
b) Create the Partner no. name as same the logical system name of the destination system.
c) Select Partner type LS
d) Enter details for Type: US/USER, Agent, and Lang.
e) Click on the + button to select the message type.
f) Select Partner no. and LS which ever create above.
g) Select Message type
h) Select Process code related to the Message type.
I) save.
In SLD System Landscape Directory
TS for R/3 (Logical system):-Assign the client name created in R/3 as Logical system Name.
Ts for Third Party (Logical system):-
BS for SAP R/3 (Logical system):- Assign the client name created in R/3 as Logical system Name.
BS for Third Party (Logical system):-Enter the XI logical system name.
In Transaction SALE
Define and Assign the logical system name.
Regards,
Ashwin M
Reward If helpful

To get the logical system names of all the child systems in a CUA envirnmnt

Hi Gurus ,
Is there any table where we can find the logical system names of all the child sytems in a CUA environment .
This is for a requirement that i need to develop an automated process where we can reset the password of all the child system in a CUA environemt when requested by the user at once .
I found some tables such as V_TBDLS , but they do not contain the exact information what i need .
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Hi,
You are in the right track. BD54 will show you the logical system name for all the existed systems in CUA.
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> Display details
here you can see logical system names for all the clients assigned to CUA.
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Deb

Logical system name conversion.

We are performing a logical system name conversion of a client and its taking long time due to huge DB Tables like COEP.
Is there any process to speed it up ? Also what will be the consequences if Consutants workin the Other clients of the same system.

Hi Narendran,
what problems would it create ? i am looking for some specific ones as i too would know that if a user works during the process the database tables which are getting updated with a new logical name would get corrupted and there is a possible chance that the table for eg VBRK woiuld be having a few entries with the old LS name. But my thoughts were in this direction. This report first converts the table T000 and then TBLST from where the MANDT and LOGSYS gets picked up many times. if they are converted every new entry which is entered will be having the new name and the old names are under the process. so how risk is it ? to allow a user to work is what i am looking for. This might be putting a test to SAP code but i am looking for this test as analysing this report would help us in many ways. you must be knowing that this report may run upto weeks, we had this experience in the last client copy and i am trying to check on this reports behaviour.

Logical system name has not been assigned to

Hi, Expert
I m trying to transferr DATA from ECC to APO . when I configured my ECC and APO systems according the SCM 210, but I still meet the error like this
logical system name has not been assigned to
syste: user:
Function/Q/SAPAPO/CIF_PRODUCT_INBOUND
text: logical system name has not been assigned to
my ECC is ECC6.0,and APO 7.0
Can u help me,Thank u. I m waiting the solution on desk
Rockey
Edited by: Xinyou Dong on Jun 2, 2011 9:11 AM

Hi,
I think you dont have partner profile created.
Try to create one with the RFC which is connecting ECC and APO.
Thanks,
Deepthi

Logical system name

Hi,
I have done the system copy from production system to quality system yesterday.After that i am unable to change the logical system name in Quality syste in scc4.The logical system field disabled.Why?
Regards,
Mani

Hi,
What we do after system copy is run BDLS in target system & this changes logical system name.
Check below link for more details
Re: about assigning logical system name to client
Thanks
Sushil

Logical system name in SRM system

We are into SRM version 5.(SRM server 5.5) with the backend system as SAP ECC 6.0 .
The logical system is defined as '0000000050' for backend SAP system . All the systems like CRM and BW uses this as the logical system name for backend system . Recently SRM is implemented in our organization and we have no other choice and have to use the logical system name as '0000000050'
When product categories are assigned in the org attributes , the system stores the back end system as 50 and this is the issue. SAP support mentions that this is issue with logical system naming convention and that need to be fixed . But they fail to understand that the same name works fine in all other systems and also in SRM system except product categories .
Is there any OSS note for this fix. I would like to hear your experiences in this scenario.
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Mani

Hi Mani,
Logical System names are system specific, hence you have a different name in SRM system which will represent your backend system and this is not at all an issue. As suggested by SAP; '0000000050' is not the best name as per best practices.
You should have a name which should be of the pattern: <SID>CLNT<Client Number>.
Now here is the solution/work around. But be very careful and try this in sandbox system before being carried out in Dev/QA/PRD systems. Please make sure no other users are performing any activity while these tasks are being carried out.
In addition, please read through the ["Set up and system copy of SRM server 5.5";|https://websmp204.sap-ag.de/~sapidb/011000358700000310782007E/SRM50_SetupTranspCopy.pdf] guide before you carry out this activity:
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I assume SRM & Backend are separate instances
1. Create a new logical system name for the backend system in SRM system as per the standard suggested above.
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4. Use the report RHOMATTRIBUTES_REPLACE, for replacing all the old logical system value with new logical system value. Please note while providing the inputs in the screen, there will be a Checkbox field called "Sub-String", you must check this one for all attributes you enter in the report. Then when you execute the report, a list will be display, here you have to select all the rows and click the first button on the toolbar. Only then the attributes will be updated.
Please let me know, if further inputs are required.
Regards, Kathirvel

Conversion of logical system name fails

Hi,
when trying to transport a transformation on BW7 the logical conversion name is failing. When i check the setup (on rsa1 menu "Conversion of logical system names") it seams to be ok on source and target system.
Any tips to solve this ?
thx in advance

Hi,
when you are not maiantained the logical systems properly , then you will get that error when you are transporting the objects
in Bi production system ( to which server you are moving objects) in that you should maiantain the all logical systems as below
1) for examaple BI deve --- BI prd
one logical systm should be bi Dev to BI prd
2) ECC production connected to BOI production
Then one more logical assignment ECC prd to BI prd
normally those two you are maintained i think so.
but when you are moving the objects from the BI development to Bi production
the daat sources are pertaining to the ECC developmet
so that ECC deve to BI Dev ( here there is no problem)
when those daat source s you are moving to production it shows error
because that ECC deve Data source logical system should be changed to BI production
so you main tain one more logical system ECC dev to ECC PRD
in your BI system
Then try reimport the same.
Thansk & Regarsd,
sathish

Logical system name in business system (SLD)

Hi,
While creating business system in SLD what should give for the logical system name?
Should the logical system name exists in ABAP stack or the new one?
Thanks.

Hi,
If you are creating the BS for SAP R/3 in SLD means we have to give the LS name which we had in SAP R/3( goto SALE and take the LS from there)
Goto Assign LS-----take the client which you are using for SAP R/3 and take the LS name assigned to that Client
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Seshagiri

An SLD system has not been assigned to logical system TEC101

Hello all
We are trying to send an message RFC or IDOC from our SRM (5.0) system to the XI (7.0). But we allways get the error
"An SLD system has not been assigned to logical system TEC101". In the SLD the system is visible, sldcheck works.
Does anyone know this problem and can give me a hint how to fix this problem?
Thanks a lot
Stefan

Hi Stefan,
Is there a technical & Business System for SRM5.0 in SLD? If entry exists then confirm if the logical system name mentioned in Business System is TEC101.
If entry does not exist in SLD for SRM, then in SRM run t-code
1) SLDAPICUST .. Enter relevant details
2) RZ70 : Give XI Server details , activate and then Execute.
Once you do that you can see entry for SRM in SLD.
After that try running the schenario again.
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Sumit

Logical system name to be updated while client copy--URGENT HELP REQUIRED

Hello All,
I have a query regarding the "Logical System name" updation during Client copy.
When we make a client copy(SRM Masters) for the Production system(SRM),the Old Logical system name for backend(which is attached to the SRM masters) gets copied to the new Client (Copy) which needs to be updated.
There is a std transaction BDLS through whcih w e can change the current Logical system name to a new one but this seems to work fine for System copy but not for Client copy.
So when i make a client copy of SRM masters for Production system,is there any other std way wherein i can change the "Logical system name " for the backend or do i have to write a CUSTOM program wherein entries for the Backend Logical system name in tables like CRMMLSGUID will be updated with the new Logical system name?
Any help on this is appreciated.
Thanks & Regards,
Disha.

Disha,
Yes, I did it twice and it worked fine.
The R/3 GUID is sent by the OLTP system (R/3) in R/3 message header.
SRM checks this GUID in CRMMLSGUID table.
If is not the same one, then replication process fails.
The only solution I found was to delete this entry. It is automatically recreated with the new GUID with the next replication, with FM CRMT_OLTP_LOGSYS1, called in BAPI_CRM_SAVE.
Look at OSS note 588701 & 765018 for deletion of CRMMLSGUID.
The issue is exactly ours: around system/client copy.
In an CRM environment, this is more critical, because we make a huge use of the middleware. But in our case, and especially after system/client copies, we can go, even if SAP does not guaranty anything, because we don't care about "old" replicated data (I don't care about old BDOCs, that should even be deleted after processing).
We have to take some risks sometimes...
Rgds
Christophe

Business system and logical system names

hello experts,
Right now m creating scenarios of IDOCs, Files and RFCs. Just wanted to know that is it compulsory to give Business system name and Logical system names same?
Does it make difference if i will give both names different?
Regards,
H.S.

Hi,
I guess i have not explained you proprely.
Here logical system mean m asking abt the system name which we are using in RFC connections to make connection between two systems.
does Business system name and Logical system name should be same?
Actually right now we have done system copy of production system into our sandbox. So all the things are pointing to the production system.
I was just wondering, if i will just change ip/ hostname into the Technical system (ip of sandbox system) and keep business system name as it is( which is right now of production system)... then for me no need to create all ID Objects again. Its just an idea. So just wanted to check is it ok... bcz in ID i have more than 60 objects which i need to create again. and i have very less time
Or if anyone can tell me any good idea to do that.
Thankx in advance.
Regards,
H.S.

What is the logical system name used for in R/3?

We have a R/3 server. The production client has a logical system name. What is the logical system name used for?
Tony Tam

Hi Tony
Following Links will help you in understanding the concept
http://benstudycenter.blogspot.com/2008/02/logical-system.html
http://help.sap.com/saphelp_sm32/helpdata/en/78/217dc151ce11d189570000e829fbbd/frameset.htm
http://help.sap.com/saphelp_sm32/helpdata/en/78/217dc151ce11d189570000e829fbbd/frameset.htm
thanks
Bhudev

Assign a Logical System Name of a production client

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