Which factor is NOT typically time-dependent in asset management?

The acquire date is fundamentally a fixed data point that does not change over time. It signifies the specific moment an asset is acquired and remains constant throughout the asset's life. This date is crucial for calculating depreciation and determining the asset's lifespan and financial reporting but does not fluctuate or depend on the passage of time.

In contrast, the other factors mentioned, such as usefulness, scrap percentage, and key, are influenced by various conditions and can adapt as the asset ages or as its utility evolves within the organizational context. For example, usefulness may change based on technological advancements and usage requirements, while the scrap percentage might fluctuate depending on the market conditions and asset condition over time. Therefore, selecting acquire date as the factor that is not typically time-dependent accurately reflects its static nature in asset management within the SAP FI framework.