SAP Financial Accounting (SAP FI) Practice Exam

The depreciation start date is primarily determined by the period control component of the depreciation key. Period control essentially defines how the useful life of an asset is managed in relation to the timing of depreciation. It specifies when the depreciation on an asset begins based on various factors, which may include the acquisition date and the planned service life of the asset.

This setting ensures that an asset's depreciation reflects actual use and value reduction over time, aligning financial reporting with the asset's performance in the business. In doing so, period control provides crucial parameters for initiating the depreciation process, thus making it a key factor for determining the start date of depreciation for fixed assets in the SAP FI module.