How To Fix PR019 - Function is not defined (check this)

PR019 - Overview

• Message type: E = Error

• Message class: PR - Forecast: Help messages

• Message number: 019

• Message text: Function is not defined (check this)

INCLUDE NA_FEHLER_SYSTVERW

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

PR019 - Details

• The SAP error message PR019, which states "Function is not defined (check this)," typically indicates that the system is unable to find a specific function module or method that is being called in the program or transaction you are trying to execute. This can occur for several reasons, including:
  Causes:
  
  Missing Function Module: The function module that is being called does not exist in the system. This could be due to a missing transport or an incomplete installation.
  Incorrect Function Name: There may be a typo or incorrect naming in the function call.
  Authorization Issues: The user may not have the necessary authorizations to access the function module.
  Namespace Issues: If the function module is in a specific namespace, it may not be accessible due to configuration or authorization settings.
  Transport Issues: If the function module was recently transported from another system, it may not have been activated or may have errors.
  
  Solutions:
  
  Check Function Module Existence: Use