How To Fix CNV_PE520 - Link structure is not maintained for data structure &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 520

• Message text: Link structure is not maintained for data structure &1

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 CNV_PE520 - Link structure is not maintained for data structure &1 ?

  The SAP error message CNV_PE520 indicates that there is a missing link structure for a specified data structure in the context of a data migration or conversion process. This error typically arises during the execution of a conversion program, particularly in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data transfer processes.
  Cause:
  The error occurs when the system cannot find a defined link structure for the specified data structure (denoted as &1 in the error message). This can happen due to several reasons:
  
  Missing Configuration: The link structure has not been defined or configured in the system for the specific data structure.
  Incorrect Data Structure: The data structure being referenced may not be valid or may not exist in the system.
  Transport Issues: If the link structure was recently transported from another system, it may not have been properly imported or activated.
  
  Solution:
  To resolve the CNV_PE520 error, you can take the following steps:
  
  
  Check Configuration:
  
  Verify that the link structure for the specified data structure is correctly defined in the system. You can do this by navigating to the relevant configuration settings in the SAP system.
  Use transaction codes like SE11 (Data Dictionary) to check if the data structure exists and is properly configured.
  
  
  
  Define Link Structure:
  
  If the link structure is missing, you may need to create it. This typically involves defining the link structure in the relevant configuration area of the SAP system.
  Consult the documentation or guidelines for the specific migration or conversion process you are using to ensure you create the link structure correctly.
  
  
  
  Check for Transport Issues:
  
  If the link structure was recently transported, ensure that the transport was successful and that all necessary objects were included.
  Check the transport logs for any errors or warnings that may indicate issues during the transport process.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes that may address this specific error. SAP Notes often provide solutions or workarounds for known issues.
  Use the SAP Support Portal to find notes related to the CNV_PE520 error.
  
  
  
  Testing:
  
  After making the necessary changes, re-run the migration or conversion process to see if the error persists.
  
  
  
  Related Information:
  
  SAP Documentation: Review the official SAP documentation for the specific migration tool you are using, as it may provide additional context and troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  By following these steps, you should be able to identify and resolve the cause of the CNV_PE520 error in your SAP system.