Date Rules

All depreciation-related dates must be the last day of the month. WorkBook enforces this throughout:

• First Depreciation Date: Set during capitalization. Must be the last day of the month, in the same month as the capitalization date or one month later.
• Next Depreciation Date: Advanced by depreciation. Always the last day of the next depreciation month. Cleared when the asset is fully depreciated or disposed.
• Purchase Date: Must be on or before the earliest operation date. Cannot be changed after capitalization to a date later than any operation.
• Disposal Date: Set during disposal. Must be within the valid range based on the asset's operation history.
• Capitalization Date: Must be on or after the latest transaction date and within an open finance period.
• Revaluation Date: Must be within the valid date range based on the asset's operation history.