Unplanned Depreciation not reducing Base Value

Question

Hi all,
Assets created in SAP. At a point, these assets had stopped
depreciating in sub-ledger but seems as if depreciation continued to be
provided for directly in the GL manually (via a jnl).
User wishes to re-capture the revised APC and Accumulated Depreciation
values back into the asset sub-ledger so that SAP will automatically
depreciate the assets according to their remaining useful life.
User has used a Write-up transaction to load the APC value. After
write-up posted, depreciation ise being calculated as expected. To get
the Accumulated Depreciation value into SAP, the user has posted
Unplanned Depreciation (TTY Type 640). However, when this is posted,
depreciation is not being calculated evenly over remaining useful life
of asset. For Year 1, depreciation is being calculated from Write-Up
(APC) values ONLY, and the Unplanned Depr (representing Accumulated
Depr) has NOT been taken into account. Unplanned Depr is only taken
into account from Year 2. This is leading to dis-proportionate depr
values in comparison from Year 1 to subsequent years across the
remaining life of the asset.
Have been testing period controls, and depr key set up but no luck.
Any ideas or suggestions will be much appreciated.

Answer 1

Dear Dattatray,
The issue here is not with the fact that no depreciation values have posted.  The issue is with the values that have been posted.  Let me illustrate by way of example.
Asset start date for depr:  Changed to 01.01.2008
Useful life of asset:  3 years, 4 months (40 months)
Write up of asset posted March 2008:  EUR 135,492.18
Unplanned Depr of asset posted March 2008 EUR 93,605.12
Therefore, Net Book Value = EUR 41,887.06
Depreciation run happened in March after ABAA entry.
Expectation:-
Based on this NBV of EUR 41,887.06 you would expect depr to post at EUR1,047.18 per month (41,887.06 / 40 months) over the remaining life of asset.  In this case, 3 months would be caught up in March as asset depr start date is 01.01.2008, and balance of EUR1,047.18 to be posted per month until asset written off 3 years and 4 months down the line.
What is happening in SAP:-
Depreciation for FY 2008 is only being calculated on the write-up value of EUR 135,492.18 and not the NBV.  Therefore, for FY2008, depreciation is being calculated at EUR 3,387.30 per month (EUR135,492.18 / 40 months).
If i look at FY2009, the Unplanned Depr value of EUR 93,605.12 is now taken into account.  Therefore, NBV at start of FY2009 is Write up 135,492.18 less Unplanned Depr 93,605.12 less Depr in 2008 (12 months) 40,647.60 = NBV EUR1,239.46.  This new NBV over remaining life which is now 28 months is EUR 44,27 per month, or EUR 531.19 for the year.
So in FY2008, Depr posted = EUR 40,647.60 (3,387.30 per month)
In FY2009, depr posted = EUR 531.19 (44.27 per month)
In FY 2010, depr posted = EUR 531.19 (44.27 per month)
In FY 2011, asset gets written off.
You can see that year 1 is highly inflated and Years 2 thru remaining life is smoothed.  This is not correct.  We would expect the depr to be smoothed every month from the start i.e. EUR 1,047.18 per month or 12,566.11 in FY2008, 12,566.11 in FY2009, 12,566.11 in FY 2010 and then written off in 2011.
I hope this helps to explain the current problem.
Thanks.