Creating a custom datasource. Please help!

Hi Experts,
I'm creating a custom datasource in RSO2 to extract data from a custom view based on three z tables. I have filled the view with the join conditions and the fields. After activating it, I have checked the data and it's correct. The problem appears when I try to create a custom datasource based on this table, the following error appears:
Invalid extract structure template ZXXX of DataSource ZXXX.
You tried to generate an extract structure with the template structure ZXXX. This operation failed, because the template structure quantity fields or currency fields, for example, field AMOUNT refer to a different table.
I have checked the quantity and currency fields in order to add the reference tables and fields. For example:
0AMOUNT: ref table: EIPA; ref field: BWAER.
The problem is that I don´t know how to join both tables (EIPA and my Zview) because the key is different in the tables and only non relevant fields like Net Price appear in both tables.
If I add only the field EIPA-WAER, the data selectedis not correct, obviously.
Please, what can I do? Any ideas?
Thanks in advance! Any help will be more than welcome. Thanks!

Hi all,
I have created an Infoset but the problem persists. If I only join the tables I need, when I generate de Infoset, a warning appears telling that some fields (currency and quantity) will not be filled. At this point, if I execute de datasource in RSA3, the number of records is correct but these fields are empty.
If I add the tables that appear in the warning message, the number of records extracted is 0, because these "auxiliar" tables only contain information about currency units but they don't have the same key values so thay cannot join.
I have a question now... the tables that I have to upload into BI are also Z Tables. What happens if I ask my development team to add currency and quantity units in these tables? I think my problem will be solved if unit fields appear in the original tables. Would it be enough?
Any suggestions on it?
Thanks in advance!
Edited by: Iñaki Rueda on Dec 29, 2009 12:02 PM

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