Price difference in the latest invoice document and the last change to

Question

Hi gurus,
This is regarding the price difference of the latest invoice document price with respect to the price of last time the document was invoiced.Without using the customer exit or back-end developement. need info if this can be done on the front-end using the front-end tool bex designer using the CKF, RKF , Variables or conditions etc
say for instance the user wants to get the price differences with respect to the invoices for a certain period that is from 01/01/2008 to 06/30/2008( dynamic entry can be any range).
Once the user enters the range for the billing document date as 01/01/2008 to 06/30/2008 the query should return the report as
Sold-to(customer) Material, Bill doc date and the price difference. these are the four columns  the users needs in the report.
now the bill-doc date will the latest invoice date for the sold-to & material, but the price difference will be the price of the last invoice date(for the sold-to , material)  - the latest invoice date price.
Example. between 01/101/2008 - 06/30/2008
customer : 2765 , material : XAWE33636FD this particular customer-product had 3 invoices on 02/15/2008 , 04/18/2008 and 06/03/2008.
price on 02/15/2008 : $1.09
price on 04/18/2008: $1.87
price on 06/03/2008: $3.84
so the report should look like
customer        material                bill doc date       price diff
2765            XAWE33636FD        06/03/2008           3.84- 1.87( latest invoice price - last invoice price)
Thanks
appreciate responses

Answer 1

Hi,
I think you will need at least some backend devlopment for this first and foremost being mapping the invoice date from souce to the Bill date.
Getting price difference is not an issue as much as tracking dates. I think you will need a counter to track the last invoice date which really needs ABAP coding
An exit would be much easier to have this functionality rather than to create RKF's and CKF's
I will update you in case any better idea strikes.
Good luck