How To Fix BOS01143 - Changes to basic line &1 not possible: alternative lines have been assgnd

SAP Error Message - Details

• Message type: E = Error

• Message class: BOS01 - Customer BOS Processing

• Message number: 143

• Message text: Changes to basic line &1 not possible: alternative lines have been assgnd

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message BOS01143 - Changes to basic line &1 not possible: alternative lines have been assgnd ?

  The SAP error message BOS01143 indicates that changes to a basic line in a bill of materials (BOM) are not possible because alternative lines have been assigned to it. This typically occurs in the context of BOM management, where alternative components or lines are defined for a particular item.
  Cause:
  The error arises when you attempt to modify a basic line in a BOM that has alternative lines associated with it. The system prevents changes to ensure data integrity and consistency, as altering the basic line could affect the alternative lines and their relationships.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Alternative Lines: Review the BOM to identify the alternative lines associated with the basic line you are trying to change. You can do this by navigating to the BOM in the SAP system and checking the alternative components.
  
  
  Remove or Modify Alternatives: If you need to make changes to the basic line, consider removing or modifying the alternative lines first. This may involve:
  
  Deleting the alternative lines if they are no longer needed.
  Changing the assignment of the alternative lines to another basic line if applicable.
  
  
  
  Use the Correct Transaction: Ensure you are using the correct transaction code for editing BOMs. Common transaction codes include:
  
  CS02: Change BOM
  CS03: Display BOM
  
  
  
  Consult Documentation: If you are unsure about the implications of changing the BOM, consult your organization's documentation or reach out to a colleague with expertise in BOM management.
  
  
  Check Authorizations: Ensure that you have the necessary authorizations to make changes to the BOM. Sometimes, restrictions may be in place that prevent certain modifications.
  
  
  Contact Support: If the issue persists and you cannot identify the cause, consider reaching out to your SAP support team or consulting SAP Notes for further assistance.
  
  
  Related Information:
  
  BOM Structure: Understanding the structure of BOMs, including how basic and alternative lines are defined, can help in troubleshooting.
  SAP Notes: Check SAP Notes for any known issues or patches related to BOM management that might address this error.
  Training: If you frequently work with BOMs, consider additional training on SAP BOM management to better understand the relationships and constraints involved.
  
  By following these steps, you should be able to resolve the BOS01143 error and make the necessary changes to your BOM.