How To Fix CPWB406 - The first selected BOM header has been reached

SAP Error Message - Details

• Message type: E = Error

• Message class: CPWB - General Workbench Messages

• Message number: 406

• Message text: The first selected BOM header has been reached

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CPWB406 - The first selected BOM header has been reached ?

  The SAP error message CPWB406, "The first selected BOM header has been reached," typically occurs in the context of Bill of Materials (BOM) processing within the SAP system, particularly when using the BOM workbench (transaction code CS01, CS02, CS03, or similar).
  Cause:
  This error message indicates that the user has navigated through the BOM records and has reached the first BOM header in the list. This usually happens when the user is trying to navigate backward through the BOM records, and there are no more records to display before the first one.
  Solution:
  To resolve this error, you can consider the following steps:
  
  
  Check Navigation: Ensure that you are not trying to navigate backward beyond the first BOM header. If you need to view previous BOMs, you may need to select a different BOM or use the search functionality to find the desired BOM.
  
  
  Use the Search Functionality: Instead of navigating through the BOMs, use the search functionality to directly access the BOM you need. This can help you avoid reaching the first BOM header unintentionally.
  
  
  Review BOM List: If you are working with multiple BOMs, review the list of BOMs to ensure you are aware of the available records. You can use transaction codes like CS15 (BOMs for Material) to get a list of BOMs for a specific material.
  
  
  Check User Authorizations: Ensure that you have the necessary authorizations to view and navigate through the BOMs. Sometimes, restrictions can lead to unexpected behavior.
  
  
  Consult Documentation: If you are unsure about the navigation process, refer to SAP documentation or user manuals for guidance on how to properly navigate through BOM records.
  
  
  Contact Support: If the issue persists and you believe it is a system error, consider reaching out to your SAP support team or consulting SAP Notes for any known issues related to this error message.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CS01 (Create BOM), CS02 (Change BOM), CS03 (Display BOM), and CS15 (BOMs for Material).
  BOM Structure: Understand the structure of BOMs in your organization, including how they are created and maintained.
  SAP Notes: Check SAP Notes for any updates or patches related to BOM processing that might address this error.
  
  By following these steps, you should be able to resolve the CPWB406 error and navigate through your BOMs effectively.