Hi,
you can apply the generic datal only one field either AEDAT or ERDAT and not possible two fields.
you have 2 tables create the view and created generic data source based on the view.
1. you can create the FM and handle delta records.
2.you can handle delta with info package but you need to write the routine for it.
better soulation create the view and create the generic data source handle the delta enble.
ask you users agian which field they want AEDAT or ERDAT
choose one filed give the upper limit 1. it will extract the records form yesterday.
Thanks,
Phani.