How To Fix WB2_ASGT120 - Predecessor &1 &2 &3 of shadow item &4 cannot be changed.

SAP Error Message - Details

• Message type: E = Error

• Message class: WB2_ASGT - Shadow items ans assignments

• Message number: 120

• Message text: Predecessor &1 &2 &3 of shadow item &4 cannot be changed.

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 WB2_ASGT120 - Predecessor &1 &2 &3 of shadow item &4 cannot be changed. ?

  The SAP error message WB2_ASGT120 indicates that there is an issue with changing a predecessor of a shadow item in the context of project management or logistics. This error typically arises in scenarios involving project structures, such as when working with network activities or project scheduling.
  Cause:
  The error message "Predecessor &1 &2 &3 of shadow item &4 cannot be changed" usually occurs due to one of the following reasons:
  
  Locked or Inactive Predecessor: The predecessor item you are trying to change may be locked or inactive, preventing any modifications.
  Dependency Constraints: There may be existing dependencies or constraints that prevent changes to the predecessor relationship.
  Shadow Item Restrictions: Shadow items are often used in specific contexts (like project planning) and may have restrictions on how they can be modified.
  Authorization Issues: The user may not have the necessary authorizations to make changes to the predecessor item.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  Check Item Status: Verify the status of the predecessor item. Ensure it is active and not locked for changes.
  Review Dependencies: Look at the dependencies and constraints associated with the predecessor item. If there are any restrictions, you may need to adjust them before making changes.
  Modify Shadow Item: If you are working with a shadow item, ensure that you are following the correct procedures for modifying it. Sometimes, changes need to be made in a specific order or through specific transactions.
  Authorization Check: Ensure that you have the necessary permissions to make changes to the predecessor item. If not, contact your SAP administrator to obtain the required authorizations.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines related to the error message and the context in which it occurs.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help in managing project structures, such as CJ20N (Project Builder) or CN41 (Network Overview).
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide additional insights or patches that address the issue.
  Support Forums: Consider visiting SAP community forums or support channels where similar issues may have been discussed, and solutions shared.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to your SAP support team for further assistance.