Delta upload in different times and targets

Question

Dear BW Gurus,
I have to fill a Master Data table with a delta (for performance reasons) from an ODS object, and later fill an InfoCube with the same delta from the same ODS Object. This two step approach is necessary because the Cube uses the Master Data filled in the first step - so I cannot do the two uploads within the same InfoPackage.
My approach was the following in a Process Chain:
1. Fill and activate "source ODS"
2. Load request from "source ODS" to PSA only
3. Update Material Master from PSA using "Read PSA and Update Data Target" process with the variant setting the PSA table and the Master Data InfoObject as Data Target.
4. Run "Attribute Change" process for the Master Data IO
5. Update InfoCube from the same PSA that was used for the Master Data InfoObject. This is also a "Read PSA and Update Data Target" process with the variant setting the same PSA table as before and now the InfoCube as the Data Target.
To me this seemed logical but when I run the Process Chain I got the following error message at point 3 (update Master Data from PSA): "No request for posting found in the variant".
This appears strange to me because if I specified the request, it would only work for the first upload and not for all the others.
Can anyone please help me how to overcome this issue of Delta upload in different times and targets?
Thanks in advance,
Attila

Answer 1

Gopi,
If I create two delta InfoPackages, the first one clears the delta queue, so the second InfoPackage won't find any data. This is unfortunately not the way to do...
Srini,
Your proposal is quite original - if I upload the same ODS with its data (amended by the date field) that would in fact generate a new delta for the same ODS.
However, in the meantime a more simple idea came up in our BW team, inspired by your proposal. For the uploading of the Master Data I now don't use the delta functionality of the ODS export Data Source, but instead I set up a full upload filtered for the actual date. This ensures the good performance of Master Data load (load time will not increase with time) and also we will have all recent Master Data uploaded from the ODS because that load is in the same Process Chain where the "Source ODS" is updated. Later in the same Process Chain I simply start the delta upload for the Cube.
Thanks a lot for all your help.
Attila
P.s. I will be out of office for until 24th July.