Check whether you are creating an entirely new asset, or if you are adding to an already existing asset:
For a completely new asset, first determine the correct asset class. Enter the asset class and the company code in the initial screen of the master data transaction (Asset
® Create
®
Asset). Another option is to use an existing asset as a reference when creating the new asset.
If you are adding to an already existing asset, you must first identify the asset main number of the existing asset. Create a new asset sub-number for this asset (Asset
®
Create
®
Sub-number
®
Asset). The system uses the main asset number to determine the asset class for the new asset.
If you are using external number assignment, enter the new asset main number (or sub-number). If you are using internal number assignment, the system automatically assigns the number.
You cannot use a hyphen or the * symbol as part of the asset number when you use external number assignment.
Choose Enter .
Maintain the relevant master record information on the tabs as needed:
General data (description, capitalization date, inventory date)
Time-dependent assignments (for example, cost center)
Allocations (evaluation groups, investment support measures)
Information on the origin of the asset
Specifications for net worth tax
Insurance data
Leasing information (especially the relevant data for the opening entry and, if necessary, determination of present value)
Maintain depreciation and valuation information for each depreciation area (or check the default values):
Depreciation key
Useful life in years/periods
Start date for depreciation calculation
Index series (for the calculation of replacement value)
Choose Choosedepreciation area , to go from the overview screen to the detail screen.
Deactivate any depreciation areas that are not necessary for the asset.
Enter .
Choose depreciation area , to go from the overview screen to the detail screen. 
Save.