Open the 
Job WIP Warnings window.
Specifies warning messages that may be associated with a particular WIP calculation.
| Warning | Cause |
|---|---|
<value> is 0. | The value calculated is 0. Check your data entries. |
Cost completion is greater than 100%. | Usage total costs is greater than schedule total costs, when WIP method is Cost Value or Percentage of completion. |
<value> is negative. | The value calculated is a negative number. Check your data entries. |
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For more information about how to navigate in the user interface, see Work with Microsoft Dynamics NAV. For more information about how to find specific pages, see Search. |