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Changeover Method 
Certain depreciation methods necessitate a changeover to another calculation method for mathematical reasons in order to depreciate the asset completely within the period of use. An example is the declining-balance method of depreciation, which never results in a net book value of zero.
Therefore, when you assign calculation methods to a depreciation key, you can enter a changeover method. The changeover method specifies when the system should change over to a different calculation method (for example, Changeover when net book value percentage is reached). The changeover method also specifies the conditions under which the changeover takes place. You can also enter a net book value percentage for certain changeover methods.
You can divide the duration of depreciation into several phases in the depreciation key. If you enter a changeover method for one of these phases, the system changes over to the next phase as soon as the event defined in the changeover method occurs. Then the system uses the type of depreciation calculation that is specified for that next phase.
You can set up the following changeover methods:
· Changeover when depreciation amount of changeover method higher
The results of the depreciation calculation in one phase in the depreciation key are compared with the results in the following phase. Changeover takes place as soon as depreciation in the following phase is higher than in the prior phase.
· Changeover when net book value percentage reached
With this method, changeover takes place as soon as the net book value falls below a specified percentage of the acquisition value.
· Changeover when net book value percent less or same as x%
With this method, changeover takes place as soon as the net book value is the same as or falls below a specified percentage of the acquisition value.
· Changeover when net book value is less than changeover amount
In the company code specifications for a depreciation area in Customizing, you can specify a global changeover amount in the local currency of the depreciation area. When the net book value falls below this changeover amount, changeover to another method takes place.
To change the changeover amount, in Customizing for Financial Accounting, choose Financial Accounting (New) ® Asset Accounting ® Valuation ® Amount Specifications (Company Code/Depreciation Area)® Specify Changeover Amount.
· Changeover when net book value is less than straight-line rate
The straight line depreciation rate is calculated from the useful life and serves as a comparison with the net book value. If the net book value falls below this straight line rate, changeover to another method takes place.
· Changeover after the end of planned useful life
You can also change over to another method when the planned useful life has expired. Declining-balance depreciation, in particular, is only defined for use during the useful life. If, for example, you were to post a post-capitalization after expiration of the useful life, you would have to use a different method.
With changeover at the end of the planned useful life, the switch to a specified changeover method takes place at an exact period. With other changeover methods, the changeover takes place according to fiscal years. The changeover criteria are checked with reference to the total depreciation for the year, and the depreciation for the entire fiscal year is either calculated with the original key or with the new changeover key.
· Changeover in next year as soon as straight-line higher (Poland)
This functions the same as Changeover when depreciation amount of changeover method higher, except that the changeover does not take place until the following year.
· User-defined changeover using a customer enhancement
You can define your own changeover methods using the BAdI methods FAA_DC_CUSTOMER (define_changeover_yr) and FAA_DC_CUSTOMER (define_changeover_yr_and_prd). Using the second method in conjunction with the method FAA_DC_CUSTOMER (define_use_of_max_periods), you can perform changeover during the fiscal year, in addition to changeovers on an annual basis. For more information, see the documentation for the individual BAdI methods (transaction SE18).
· The system determines if a phase change needs to take place during the following functions: year-end carryforward, recalculate values, and posting of transactions. In the standard system, the system uses the annual values for this check.
· However, one exception is the changeover method Changeover after end of the useful life. This changeover is performed for the given period rather than the year. If the end of the planned useful life does not fall at the end of a fiscal year, the system determines the method that applies for each activity (either the year-end carryforward or a transaction), based on the asset value date. However, the system does not calculate using two methods for one activity (that is, for the time period before the end of the planned useful life and the time period after the end of the planned useful life). The determining factor for deciding which method is valid is whether the asset value date for the activity is before or after the end of the planned useful life. This means that a changeover after the end of planned useful life only takes place, for a year-end carryforward, after the fiscal year ends that follows the one in which the planned useful life ended. For a transaction, the system determines on an individual basis whether the value date is before or after the end of the planned useful life.
Using the BAdI method FAA_DC_CUSTOMER (define_use_of_max_periods), you can change over the depreciation method in a given period within the planned useful life.

A changeover to a different percentage rate or base value in the levels of a multi-level method is not considered a changeover method in the above sense. The changeover to another level takes place at the exact period for each activity.

Changeover After the End of Planned Useful Life
