How To Fix VN016 - Output &, medium &, application & are not defined

VN016 - Overview

• Message type: E = Error

• Message class: VN - Nachrichtensteuerung

• Message number: 016

• Message text: Output &, medium &, application & are not defined

What causes this issue?

You have chosen a combination of output, category and application which
is not defined.

How to fix this error?

INCLUDE NA_EINGABE_PRUEFEN
If you really want to use this combination, maintain Table TNAPR or
inform your programmers or system administrator.

Error message extract from SAP system. Copyright SAP SE.

VN016 - Details

• The SAP error message:
  VN016 Output &, medium &, application & are not defined
  typically occurs in the context of Vendor Master Output Determination or Output Management in SAP, especially when trying to process or print outputs related to vendor documents (like purchase orders, invoices, etc.).
  
  Cause
  This error means that the system cannot find a valid output type, medium, and application combination defined in the output determination procedure for the vendor or document in question.
  More specifically:
  
  
  The output determination procedure is missing a configuration entry for the combination of:
  
  Output type (e.g., print order, email, fax)
  Medium (e.g., print, email, EDI)
  Application (e.g., purchasing, invoice verification)
  
  
  
  As a result, when the system tries to determine how to output the document (e.g., print or send it), it fails because no valid output configuration exists.
  
  
  
  Solution
  
  
  Check Output Determination Configuration:
  
  Go to transaction NACE (or SPRO ? Materials Management ? Purchasing ? Messages ? Output Control).
  Select the relevant application (e.g., EF for Purchase