If a user has enabled the "Display Report Title on Screen" setting at Home > Set Preferences, a warning message is shown on financial or inventory reports when Cost of Goods Sold is calculating: "An inventory costing calculation is currently scheduled or in progress. Transactions on or after 9/18/2018* may be affected. The values on this report may be incorrect until this calculation completes."
*The date shown in the error message will vary depending on the date of the affected transaction(s).
It is important to know that Cost of Goods Sold Calculations do not run in closed periods. If the date on the report is in a closed period, that accounting period will need to be re-opened to allow COGS to complete. (It is recommended that the period is left locked though, to prevent users posting in the previously closed period(s).)
Once the COGS message on the report disappears (the amount of time it takes to do this will vary, depending on the number of items and transactions that need to be recalculated), the periods can then be closed again.
If the date on the message does not change for several days, Support should be contacted so a defect can be filed.