Accounting Lock Dates — close your books and keep them closed
You close the books for a month, reconcile everything to QuickBooks or Xero, and move on — and then a customer return, a late supplier bill, or a marketplace settlement shows up dated back in that closed period. Do you let it silently change a month you've already reported? Block it and lose the transaction entirely? Neither is a good answer. SKU.io now has first-class accounting lock dates — set the date your books are closed through, and any activity that arrives afterward dated on or before it is automatically posted to the first open day instead, with its original date preserved and clearly flagged. Your closed periods stay closed, and nothing falls through the cracks.