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

U9520 - Overview

• 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

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 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