Hi Abhishek,
When I try to upload the new characteristic from file flat, the follow error appear:
RSAR 204: Error when you calculate the node level in ahierarchy.
There is two sap notes, but it not apply for our case.
When I create the infopackage of datasource from file, in tab "Hierarchy Selection" I can't select the herarchies available from OLPT, I have to create a new hierarchy. Although I create a new hierarchy with the same technical name of OLPT hierarchy, the system assign a new internal ID.
And I think that, when I execute the infopackage from file flat, try calculate the node level in the new hierarchy created and not of the hierarchy existing in a infoobject.
For this reason I guess that it isn't possible update by file flat of a hierarchy downloaded from OLPT.
Regarding your proposal of download the OLPT hierarchy, update it and upload to BW from file flat (deleting the existing hierarchy). I think that would be the more aproximate option, but we'll have to analyze the process, because the hierarchy will be updated both from OLPT as file flat.
Have I to assume that my guesses are right?.
Best Regard,
Mario.