How To Fix IO406 - Character string &1 is a special direct successor of &2


SAP Error Message - Details

  • Message type: E = Error

  • Message class: IO - Plant Maintenance: Object List

  • Message number: 406

  • Message text: Character string &1 is a special direct successor of &2

  • Show details Hide details
  • What causes this issue?

    Program error

    System Response

    The system does not allow further processing.

    How to fix this error?

    The system issues an error message and will not allow you to continue with this transaction until the error is resolved.


    Error message extract from SAP system. Copyright SAP SE.


Smart SAP Assistant

  • What is the cause and solution for SAP error message IO406 - Character string &1 is a special direct successor of &2 ?
    The SAP error message IO406 indicates that there is an issue with the character string being processed in relation to a hierarchy or structure in the system. Specifically, it suggests that the character string (often a cost center, internal order, or similar entity) is being treated as a special direct successor of another entity, which may not be valid in the context of the operation being performed.
    
    Cause: Hierarchy Structure Issues: The error often arises when there is a problem with the hierarchy structure in the system. For example, if you are trying to assign a cost center or internal order that is not correctly defined in the hierarchy. Data Integrity Issues: There may be inconsistencies in the data, such as missing or incorrect relationships between entities. Configuration Errors: Incorrect configuration settings in the controlling area or organizational structure can lead to this error.
    Solution: Check Hierarchy Structure: Review the hierarchy structure in the system to

    Already have an account? Login here!




Instant HelpGet instant SAP help. Sign up for our Free Essentials Plan.


Related SAP Error Messages

Click the links below to see the following related messages:

Click on this link to search all SAP messages.


Rating
The AI Support Assistant is great. It provides comprehensive assistance even on the most difficult issues. I highly recommend this service.
Rate 1
John Jordan
SAP Consultant & Author