Check logic

Question

My requirment is as follows,
When the warranty bill comes to us it has following 3 fields along with the others.
1.SerialNO , Oldimei, Newimei.The warranty period is calculated accroding to the field SerialNo.
2. in case of moblies ph. if the PCB is repalced the imei no and the serial no changes.So ,now if changed pcb is again damaged and is to be replace for the same mobile ,the warranty period is calculated form the first changed pcb so the same mobile gets new warranty period.And this goes on.
3. So now,in the bill we aske the clients to enter the field "Newimei" if the pcb is replaced.
4.If the field "newimei" is present in the bill i update the data for the customer in one "z" table.
the fields for these are "customer,company,serialno,oldimeino,newimeino,bill no,model".
5.now refer to the eg:
  oldimei   newimei
1. aaa        bbb
2. bbb       ccc
3. ccc
Now whenever the bill comes i need to check that the "oldimei" in 3(ccc) on the bill exist in the "z" table as the "newimei" in 2(ccc).if yes check if the oldimei for this 2(bbb) exist as the new in the "z" table as in 1(bbb) .if yes keep checking till it is noo available as "newiimei" in the record in the table .If no i need to capture that record and get the "oldimei" for the same wherby i get the old serilano  to calculate the warranty period.\So how do i achieve this in a loop?
4.Also this serila no is being used in the complete warranty check logic further in the exisitng code so i need to use this "captuerd old serial no for all the calculations which is not just in one place and also the same gets saved in the master table where the bill data is saved.But while saving i want to save the existing new serial no on the bill on the captured one.How do i go?
Please do guide.

Answer 1

Hi,
if the old and new imei no's are same identity u can try this
assume in ur internal table (it) records are like this
customer company serino oldimeino newimeino billno mobel
2            1000        1         aaa         bbb          1        i1
2            1000        2         bbb         ccc          2        i1
2            1000        3         ccc                          3        i1
declare two internal tables(it1,it2) same as it.
refresh:it1,it2.
it1[] = it[].
sort it by customer oldimeino.
delete adjacent dupliactes from it comparing customer oldimeino.
sort it1 by newimeino.
delete adjacent dupliactes from it1 comparing customer newimeino.
loop at it.
read table it1 with key customer  = it-customer
newimeino = it-oldimeino.
if sy-subrc ne 0.
move-corresponding it to it2.
append it2.
endif.
clear:it,it2,it1.
endlloop.
now in it2 we have records with serino's & oldimeino which is not having any newimeino.
based on this internal table it2 u can  update the data in master table.