What is legacy asset subnumber in SAP FI-AA - Asset Accounting?

SAP Term: legacy asset subnumber

• Component: FI-AA

• Component Name: Asset Accounting

• Description: Characteristic that uniquely identifies a legacy asset for the legacy data transfer in combination with the main asset number. The complex fixed asset is identified by the main asset number. The individual parts or subsequent acquisitions can be represented by subnumbers. You have to define your own master data for each subnumber.

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• Key Concepts: 
  Legacy asset subnumber is a unique identifier assigned to an asset in SAP Asset Accounting (FI-AA). It is used to differentiate between different assets within the same asset class. The subnumber is assigned when an asset is created and cannot be changed. 
  
  How to use it: 
  The legacy asset subnumber is used to identify an asset in SAP Asset Accounting. It can be found in the Asset Master Data screen, under the “Subnumber” field. This number can be used to search for an asset in the system, as well as to track its depreciation and other financial information. 
  
  Tips & Tricks: 
  When creating a new asset, it is important to ensure that the legacy asset subnumber is unique and not already assigned to another asset. This will help prevent confusion and ensure that all assets are properly tracked in the system. 
  
  Related Information: 
  The legacy asset subnumber is closely related to the SAP Asset Number, which is a unique identifier assigned to each asset class. The Asset Number can be found in the Asset Master Data screen, under the “Asset Number” field.