How To Fix PU016 - Header &1: Unknown function, no action

SAP Error Message - Details

• Message type: E = Error

• Message class: PU - Upgrade and Transport Log Messages

• Message number: 016

• Message text: Header &1: Unknown function, no action

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?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

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 PU016 - Header &1: Unknown function, no action ?

  The SAP error message PU016, which states "Header &1: Unknown function, no action," typically occurs in the context of payroll processing or when working with HR-related functions in SAP. This error indicates that the system has encountered a function or operation that it does not recognize or that is not defined in the current context.
  Causes:
  
  Incorrect Function Code: The function code specified in the payroll or HR processing is not valid or does not exist in the system.
  Configuration Issues: There may be a configuration issue in the payroll schema or the related infotypes that leads to the system not recognizing the function.
  Missing Authorizations: The user may not have the necessary authorizations to execute the function.
  Custom Development: If there are custom enhancements or modifications in the payroll process, they may not be correctly implemented or may have errors.
  Version Mismatch: The error could arise if there is a mismatch between the SAP version and the payroll schema being used.
  
  Solutions:
  
  Check Function Code: Verify the function code being used in the payroll or HR process. Ensure that it is correctly defined and valid.
  Review Configuration: Check the configuration settings in the payroll schema and related infotypes. Ensure that all necessary functions are properly configured.
  User Authorizations: Ensure that the user executing the function has the necessary authorizations to perform the action.
  Debugging: If you have access to debugging tools, you can trace the execution of the payroll process to identify where the error occurs and why the function is not recognized.
  Consult Documentation: Review SAP documentation or notes related to the specific payroll function you are trying to execute. There may be known issues or updates that address the problem.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for assistance, especially if it involves custom developments or complex configurations.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to the error message PU016. SAP frequently updates its knowledge base with solutions to common problems.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as PA30 (Maintain HR Master Data), PC00_MXX_CALC (Payroll Calculation), and others that may be involved in the process.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the PU016 error and implement a solution to resolve it.