How To Fix 16005 - Choose a valid function

SAP Error Message - Details

• Message type: E = Error

• Message class: 16 - Type matching for variant configuration (as of 4.5A)

• Message number: 005

• Message text: Choose a valid function

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message 16005 - Choose a valid function ?

  The SAP error message 16005, which states "Choose a valid function," typically occurs when a user attempts to execute a function or transaction that is not available or is not valid in the current context. This can happen for various reasons, including:
  Causes:
  
  Invalid Function Code: The function code entered may not exist or may not be valid for the current screen or transaction.
  Authorization Issues: The user may not have the necessary authorizations to execute the function.
  Incorrect Transaction Context: The function may not be applicable in the current context or transaction state.
  System Configuration: There may be configuration issues in the SAP system that prevent the function from being executed.
  
  Solutions:
  
  Check Function Code: Verify that the function code you are trying to use is correct and valid for the current transaction.
  Review Authorizations: Ensure that you have the necessary authorizations to execute the function. You may need to contact your SAP security administrator to check your roles and permissions.
  Context Verification: Make sure you are in the correct transaction or screen where the function is applicable. Sometimes, functions are only available in specific contexts.
  Consult Documentation: Refer to SAP documentation or help resources to understand the valid functions for the transaction you are using.
  System Configuration: If you suspect a configuration issue, consult with your SAP Basis or technical team to check if there are any settings that need to be adjusted.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide specific guidance or fixes.
  Transaction Codes: Familiarize yourself with the transaction codes and their associated functions to avoid using invalid codes.
  User Training: Ensure that users are adequately trained on the SAP system to minimize errors related to invalid function calls.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to your SAP support team for further assistance.