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Why does closing Statistics give the error "Invalid function call. Function reserved for external tax engines only." in Microsoft Dynamics NAV?

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Overview

When closing the statistics window for invoices in Dynamics NAV the following error appears:

Invalid function call. Function reserved for external tax engines only. 
Page Edit - Sales Order Statistics must close. 

Environment

Dynamics NAV

Resolution

  • The “Use external Tax engine” box for the Tax Area code.(AvaTax) is checked. We recommend you not check the "Use external Tax engine" check-box for the Tax Area code (AvaTax).