The following example shows the defined validity periods of a depreciation key with five levels (60, 10, 10, 10, 10%) for the individual acquisition years. 1994 is a shortened fiscal year with 9 months (1/1 - 9/30). A full year's depreciation is to be calculated in the shortened fiscal year:

You do not have to make changes for acquisition years prior to 1991, since the key is only valid for 5 years, and the shortened fiscal year would no longer have an effect.