Automate Deletion of Infoobject Data in Process Chain

Dear BW Experts,
We refresh our QBI (Testing system) system every 4 months. Hence we have to drop all the data and refresh it again.
I have built a process chain to automate deletion of cubes and DSOs. I am unable to include deletion of Infoobjects (Infosources) in the process chain.
Could you please suggest as to how to do this via process chain (and not manually) since we have more than 20 Infoobjects where data has to be deleted.
Thanks,
Sai
Edited by: Sainath Vadathirthanathan on Aug 13, 2010 10:33 AM

Leavte it blank or enter source object
From help ..Press F1 on that paramter to understand
Reference characteristic
The reference characteristic has the technical properties of a characteristic such as data type and length, as well as the master data (attributes, texts and hierarchies). The characteristic itself also has buinesses semantics. Several characteristics can refer to the same reference characteristic. Such characteristics automatically have the same technical properties and master data.
Example:
The characteristics sender cost center and receiver cost center use the reference characteristic cost center and with it the same values and the same texts.

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This is what I fetched fom help.
Reference characteristic
The reference characteristic has the technical properties of a characteristic such as data type and length, as well as the master data (attributes, texts and hierarchies). The characteristic itself also has buinesses semantics. Several characteristics can refer to the same reference characteristic. Such characteristics automatically have the same technical properties and master data.
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Automate Deletion of Infoobject Data in Process Chain

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