Generic extraction- creation of data source

hi gurus,
I am creating a customized table which has both quantity and currency fields.
i have given both the reference fields as well.
Here the reference table used for quantity is ekko and the field is meins.
and the reference table used for currency is ekpo and the field is waers.
i have no problem in saving and activating the table.
now while creating the data source in the maintain generc data sources i get the following error.
Use the template structure to create a view or DDIC structure that does not contain the inadmissable fields.
can any one help me...
with regards!
ramesh

Hi
Here the reference table used for quantity is ekko and the field is meins.
and the reference table used for currency is ekpo and the field is waers.
Add MEINS and WAERS field in the customized table for example ZTABLE and for Quantity field mention ZTABLE as reference table and reference field as MEINS same for WAERS.
Thanks
Suganya

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