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The "The "Conservation of Fixed Assets (create)" form. . The Fixed Assets tab
Click Add on the toolbar to append a line to the document.
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The Accumulated Depreciation (Acct. Cur.) subcolumn shows the sum of depreciation amounts calculated over all previous periods, since the start of the depreciation.
The Net Book Value (Acct. Cur.) column shows the difference between the initial cost (or the costs in the Cost for Depreciation column Calculation column if different) and the accumulated depreciation for the asset.
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