Depreciate fixed assets

I need the depreciation journal posted for the plant and equipment schedule for fiscal year ending June 30. Post the attached depreciation values to ledger 5120, run the month-end depreciation posting, and then email Anna in accounting and Marco in treasury the confirmation with the posted batch number by Friday. Check the accumulated depreciation totals against last year before posting.

Before I run depreciation for the fixed-asset pool, make the journal easy to audit: show total depreciation per asset class up front, flag any assets with zero useful life or negative net book value, and surface assets with unusual life changes this year. Highlight entries that will change prior-year accumulated depreciation so reviewers can approve quickly.

I posted the monthly depreciation and three assets now show a negative net book value. Anna in accounting and the fixed-asset steward are copied. I’m worried we mis-entered useful life or accumulated depreciation was adjusted earlier this quarter. I cannot see who changed the original acquisition entries. What is the most likely cause and the one safe fix to reverse or correct this month’s posting without breaking the audit trail?

Quarter after quarter we spend hours reconciling why depreciation totals differ from the fixed-asset schedule. We repeatedly find life changes entered late, incorrect capitalization dates, and missing accumulated depreciation adjustments from disposals. Which three habits should the asset accounting team adopt to stop this recurring firefight and cut the reconciliation time in half?