Dependency on the logical system

[Former Member]

Hi Experts,

I need to understand the dependency of the logical system when we extract the data from source system to the BI.

Scenario:

In the development system, we have two clients A and B in SAP R/3 which makes 2 corresponding logical system a, b. There are extractors in BI pointing to them. There are BI structures (transformations/DTPs/DSOs/Cubes) built on these extractors.

(R/3 dev.) A --> BI extractor (a)--> DSOs/Cubes

(R/3 dev.) B --> BI extractor (b) --> DSOs/Cubes

Case 1: In the quality system, if the logical system A and B are merged to a single logical system M, what is the impact on the BI side in terms of transports and in terms of the created BI structures (transformation, DTP, DSO, Cube)? How do I send the transports for BI without impacting the structures?

(R/3 dev.) A --> (R/3 quality) M --> BI?

(R/3 dev.) B --> (R/3 quality) M --> BI?

Case 2: In the quality system, if the logical system A  and B are divided into 4 different logical system P, Q, R, S, what will be the impact in BI?

(R/3 dev.) A --> (R/3 quality) P --> BI?

(R/3 dev.) A --> (R/3 quality) Q --> BI?

(R/3 dev.) B --> (R/3 quality) R --> BI?

(R/3 dev.) B --> (R/3 quality) S --> BI?

Thanks,

Vasanti

[Former Member · Accepted solution]

Hi Vasanthi,

It all depends on what RSLOGSYSMAP table contain.

For CASE 1 mapping should be as below in RSLOGSYSMAP table of your QA system, provided that you maintain unique techincal name of objects irresptive of which development system they are created in.

(R/3 dev.) A --> (R/3 quality) M

(R/3 dev.) B --> (R/3 quality) M

In CASE 2 mapping should be as below in RSLOGSYSMAP table of your QA systems and once the object is written from Dev to any of QA system, based on this mapping, logic system of objects get converted.

(R/3 dev.) A --> (R/3 quality) P

(R/3 dev.) A --> (R/3 quality) Q

(R/3 dev.) B --> (R/3 quality) R

(R/3 dev.) B --> (R/3 quality) S

Regards,

Ravi Poluru

[Former Member · Accepted solution]

Hi Kiran/Ravi,

Thanks for your input. Can you explain me how the values in the table RSLOGSYSMAP is maintained?

[former_member188080 · Accepted solution]

Hi,

check following thread

http://help.sap.com/saphelp_nw70/helpdata/en/46/94b1fc87bd13eae10000000a155369/content.htm

you have to maintain both the SAP BW system along with correct clinet name and also SAP R/3 as we also send datasource ..

check above link it will help u..

Thanks and regards

Kiran

[Former Member · Accepted solution]

Use T-Code: RSA1 and Navigate to 'Source Systems-->Tools (on menu bar) --> Conversion of Logical System Names'. By clicking on New entries you can maintain mappings.

Regards,

Ravi Poluru

[former_member188080]

Hi,

You should have correct mapping in table RSLOGSYSMAP which will point towards which is the source system and which is the target system..

Thanks and regards

Kiran