AR AGING REPORT. Why 'BalDueDeb' minus 'BalDueCred' not same as Balance?

Question

Dear All,
I am trying to build SQL which mimics the AR Aging Report in SAP B1 8.8. Reason is to add additional fields needed by Management. I get the SAME TOTAL as Ageing, but when I run my query, I can't get the same no. of rows as Aging.
Aging has 700 rows (NOT display reconciled transactions), and my aim is to get the same no. of rows.
Case I: When I use: WHERE (T0.BalDueDeb - T0.BalDueCred) != 0
I get 816 rows. All zero balances are eliminated, but it seems that some transactions which have been reconciled appear in my report as outstanding debits and also credits. This is why it has more rows than Aging, although total is correct.
Case II: When I use: WHERE Balance !=0
I get 5026 rows. Many rows show zero balances. I don't understand why they are not eliminated. I thought the 2 commands were equivalent.
But the good news is that when I export to Excel and delete all those zero rows, I get exactly 700 rows, same as Aging!
Same total, same no. of rows!
If anybody could help me complete my query, I can continue. How can I eliminate these rows having zero balances? Where have I gone wrong?
Thanks a lot.
Leon Lai
=========================================================================================
SELECT distinct
T1.CardCode,
T1.CardName,
T0.RefDate,
CASE 
           WHEN T0.TransType=13 THEN 'IN'
           WHEN T0.TransType=14 THEN 'CN'
           WHEN T0.TransType=30 THEN 'JE'
           WHEN T0.TransType=24 THEN 'RC'
           WHEN T0.TransType=46 THEN 'PS'
           ELSE 'Error ! ! ! !'
END AS 'Document Type',
T0.Ref1 'Document Number',
CASE 
           WHEN T0.TransType=13 THEN 'IN' + T0.Ref1
           WHEN T0.TransType=14 THEN 'CN' + T0.Ref1
           WHEN T0.TransType=30 THEN 'JE' + T0.Ref1
           WHEN T0.TransType=24 THEN 'RC' + T0.Ref1
           WHEN T0.TransType=46 THEN 'PS' + T0.Ref1
           ELSE 'Error ! ! ! !'
END AS 'Concat',
T0.Account,
T0.Line_ID AS 'Row',
T0.BalDueDeb,
T0.BalDueCred,
T0.TransId AS 'Id JDT1',
(T0.BalDueDeb- T0.BalDueCred) AS 'Balance'
FROM JDT1 T0 inner join ocrd t1 on t0.Shortname = t1.CardCode
WHERE T1.CardType = 'C'
PROBLEM IS HERE--??????????????--
--and (T0.BalDueDeb - T0.BalDueCred) != 0       
and Balance != 0
-- The query gives different results depending on which of the above lines is run. Why?
PROBLEM IS HERE--??????????????--
ORDER BY T1.CardCode, T0.RefDate, T0.Ref1

Answer 1

Dear Gordon,
Thanks for your reply, and sorry for the incomplete reply which went beyond my control.
Here are my results using WHERE (T0.BalDueDeb - T0.BalDueCred) !=0
I have compared Aging Report with SQL Query.
Doc Type  Aging Rows         Aging Total     SQL Rows    SQL Total*
CN            57        -214,315.34     57        -214,315.34
IN           452       4,741,436.41     452       4,741,436.41
JE           134         202,209.56     267         201,584.56
PS            12         107,652.40     18         121,352.40
RC             4        -107,168.04     10        -120,243.04
           659       4,729,815.00     804        4,729,815.00
The results are messy, time consuming to generate and investigate. Too much for newbee!
The main differences lie in JE; about x2 rows in SQL Query.
This may be due to rows that have reconciled in Aging, but appear in SQL Query.
I have also prepared a list of Doc. Nos where there are differences, but too lengthy.
TO Help you understand what's happening the foll. remarks may help:
(1) The T0.Ref1 'Document Number' is empty for all JE. However, for other Doc types, these exist and agree with Aging.
(2) Although 'Document Number' is empty for JE, there is a column Ref1 which does give a reference which agrees with Aging
(3) A specific document always has 1 row in Aging, but may have several rows in my query
(4) I do not know why using:  WHERE Balance !=0 works, but it does give a near perfect result. Why not use this as starting point? After deleting all the zero rows which it cannot delete, I GET EXACTLY the same result as SAP B1 8.8 Report 'Aged Analysis of Debtors'. Same no. of rows, Same total. How to delete these zeros in SQL?
(5) In SAP B1 forum, it seems many persons still cannot arrive at the official Aging. I maybe near the correct solution, but no idea why it works.
(6) I am continuing the struggle - maybe I need to put a sub query to eliminate the zeros first?
Thanks
Leon Lai