Is there 2 way communication possible with SAP Landscape Replication Server?

[Former Member]

Hello,

We want to use the LRS for replicating data from an ERP system to S4/Hana and eventually get rid of the ERP system and move completely to S4/Hana. That means that some period of time the two systems are running together.

I have one question left for which I can't find an answer. After replication you have an ERP source system and an S/4Hana target system. And with real-time data replication every change in the ERP system is automatically transferred to S4/Hana.

So far, so good. But what happened when users on the S4/Hana environment also change data? Is there also a way to make sure that the changed data on the S4/Hana environment is also replicated (back) to the ERP system?

Or is LRS only a one way solution?

Can anyone give me an answer for this? It’s very important for me to know because the decision of using LRS is depending on it.

Many thanks in advance!!

Regards,

Hans

[Former Member]

Thanks Guys,

This won't be an option.

So gone do a DMO/SUM to S4/HANA

[Andrey_M]

Hi Hans,

when I told that you can get into the endless loop, I mean that the problem is that you want replicate same tables. If you do the way bidirect, then you will get the triggers on both side.
It means, that as soon as the records will be inserted or updated on one side the record become relevant for replication and get into the logging table. The same happens on the other side. So one record will be always jump from one system into another for ever.

Unfortunately I didn't heared about any company who could implement such approach.

[Former Member]

Hello Andrey,

Thanks for the information. Wasn't the answer I was hoping for….

But your suggestion regarding two configurations could be the solution.

From source to target using real-time and back from target to source using scheduled batch?

Do you think this could do the trick?

[Andrey_M]

Hi Hans,

Actually SLT Replication Server is developed just to transfer data. Of course, you can setup two configurations that is move data in both directions, but in such case you will come into the endless loop.

For the migration from ERP systems to the s/4 system I suggest you to read the information about NZDT tool.