Cost difference between PM report MCI8 and IW38 orders cost

Question

Hi Experts!
I have an issue of cost difference  between Plant Maintenance total actual cost of orders and Cost analysis report.
Short Text    
Cost difference between PM report MCI8 and IW38 orders cost   
Long Text    
Applied SAP notes 180047 and 112841 for the following error:
Cost is not displaying in MCI8 for every 3 months intervals.
Now this problem has been resolved but got an another error like cost
difference between MCI8 report and IW38 order costs.
Note applied method:-
1). Configured FYV as Z1 with Period update for info structures S61 to
S65, S70, S114 to S116.
2). Regenerate order cost in Tcode OLI5.
3). PMIS: Statistical setup of info structures T.Code u2013 OLPM
For Info Structures which is changed in the configuration SO61-SO65,
SO70, S114-S116.
4). Copy info structures Version &( to Active version 000 T.Code u2013 OLIX,
Select Copy version
For all info Structure SO61-SO65, SO70, S114-S116.
*Steps for Reconstruction*    
New another error like cost difference between MCI8 report and IW38
order costs.
Step 1. Transaction- MCI8, Order type - CORR, Period -01.2009 to
12.2009 and execute
Step 2. Drilldown the corrective maintenance order costs into period
wise.
Step 3. Transaction- IW38, Order type Corr, Period -01.2009 to 12.2009,
Currency - EUR and execute
Cost differences: E.g. Example A)
                               MCI8                                 IW38
Total costs             8.041,69                           5.544,99
of WOs               18                                     18
So far my view is that, regardless of the selection criteria or the
output layout, predominantly the costs are different.
I would expect that they are equal. And what the right result are,..u2026Iu2019m
not sure.
Regards,
Santhamoorthy

Answer 1

Hello,
Sometimes this difference comes because of the selection period which we are choosing.
Try to run IW38 once with the help of Basic start and basic finish dates of the order.
And after that with the help of the period with the same dates range.
You will get the difference also.
the reason is that whenever any Posting is done in the previous month PM order the system changes the basic start date and when you select the current period and execute IW38 it shows the whole cost incurred on the order including all previous cost.
But in MCI8 it does not happen because MCI8 is run through LIS structures. And in this report only the current month cost will be shown by the system.
I hope you got the idea about differences.
Regards
Naveen