How To Fix U9520 - Alternative time-dependent component does not exist in table COMPALT

SAP Error Message - Details

• Message type: E = Error

• Message class: U9 - Message Class for Output in Application Log

• Message number: 520

• Message text: Alternative time-dependent component does not exist in table COMPALT

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message U9520 - Alternative time-dependent component does not exist in table COMPALT ?

  The SAP error message U9520, which states "Alternative time-dependent component does not exist in table COMPALT," typically occurs in the context of SAP's Product Lifecycle Management (PLM) or when dealing with alternative components in a Bill of Materials (BOM) or similar structures. This error indicates that the system is unable to find a specified alternative component in the relevant database table (COMPALT) for the given time period.
  Cause:
  
  Missing Data: The alternative component you are trying to access may not be defined in the COMPALT table for the specified time frame.
  Incorrect Configuration: The configuration settings for the BOM or the product may not be set up correctly, leading to the system not recognizing the alternative component.
  Time Dependency Issues: The alternative component may exist, but not for the specific validity period you are querying.
  Data Migration Issues: If data was migrated from another system or during an upgrade, some entries may not have been transferred correctly.
  
  Solution:
  
  Check the COMPALT Table: Use transaction SE11 or SE16 to view the COMPALT table and verify if the alternative component exists for the required time period.
  Define the Alternative Component: If the component is missing, you may need to create or update the alternative component in the relevant configuration or BOM settings.
  Review Validity Periods: Ensure that the validity periods for the alternative components are correctly defined and that you are querying within those periods.
  Check Configuration Settings: Review the configuration settings for the BOM or product to ensure that alternative components are set up correctly.
  Data Consistency Check: If you suspect data migration issues, perform a consistency check on your data to ensure that all necessary entries are present and correctly configured.
  
  Related Information:
  
  Transaction Codes: You may find it useful to use transaction codes like CS03 (Display BOM), CS02 (Change BOM), or CS01 (Create BOM) to manage BOMs and their components.
  Documentation: Refer to SAP documentation or help files related to BOM management and alternative components for more detailed guidance.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for relevant notes in the SAP Support Portal.
  Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  By following these steps, you should be able to identify the cause of the U9520 error and implement a solution to resolve it.