How To Fix CM502 - Choose a valid line

SAP Error Message - Details

• Message type: E = Error

• Message class: CM - Task list messages: Material component allocations

• Message number: 502

• Message text: Choose a valid line

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?

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CM502 - Choose a valid line ?

  The SAP error message CM502 "Choose a valid line" typically occurs in the context of SAP's configuration or data entry processes, particularly when the system expects a selection from a list or table, but the selection made is invalid or not recognized by the system.
  Causes:
  
  Invalid Selection: The user may have selected a line or entry that is not valid for the current context or transaction.
  Data Integrity Issues: There may be issues with the underlying data, such as missing or incorrect entries in the database.
  User Permissions: The user may not have the necessary permissions to access or modify the selected line.
  System Configuration: There may be configuration settings that restrict certain selections based on business rules or logic.
  Session Issues: Sometimes, the session may not be properly initialized, leading to unexpected behavior.
  
  Solutions:
  
  Recheck Selection: Ensure that the line or entry you are trying to select is valid and exists in the system. Double-check the criteria for valid selections.
  Refresh Data: If the data has been recently updated, try refreshing the screen or reloading the data to ensure you are working with the most current information.
  Check Permissions: Verify that you have the necessary permissions to access the selected line. If not, contact your system administrator for assistance.
  Consult Documentation: Review any relevant SAP documentation or user guides that pertain to the transaction or module you are working with to understand the valid selection criteria.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert to diagnose and resolve the issue.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes depending on the context (e.g., configuration, data entry).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Forums: SAP community forums and user groups can be valuable resources for finding solutions to common errors and sharing experiences with other users.
  
  If you continue to experience issues, providing additional context about the specific transaction or process you are working with can help in diagnosing the problem more accurately.