How To Fix WB2_ASGT155 - TC &1: Customer cannot be changed. Items have predecessor or successors.

SAP Error Message - Details

• Message type: E = Error

• Message class: WB2_ASGT - Shadow items ans assignments

• Message number: 155

• Message text: TC &1: Customer cannot be changed. Items have predecessor or successors.

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 WB2_ASGT155 - TC &1: Customer cannot be changed. Items have predecessor or successors. ?

  The SAP error message WB2_ASGT155 indicates that you are trying to change a customer assignment in a way that is not allowed because there are items that have predecessor or successor relationships. This typically occurs in the context of project management or logistics, where certain items are linked to others in a way that prevents changes to their associated customer.
  Cause:
  The error arises when:
  
  You attempt to change the customer assignment for a project or item that has dependencies (predecessors or successors) linked to it.
  The system enforces integrity rules to ensure that changes do not disrupt the relationships between items.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Dependencies: 
  
  Review the items associated with the project or order to identify any predecessors or successors. You can do this by navigating to the relevant transaction or using reports that show item relationships.
  
  
  
  Modify Relationships:
  
  If possible, modify or remove the predecessor or successor relationships before attempting to change the customer assignment. This may involve changing the status of the items or reassigning them.
  
  
  
  Change Customer Assignment:
  
  Once the dependencies are resolved, you can attempt to change the customer assignment again.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on handling item relationships in your version of SAP.
  
  
  
  Seek Help from SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help you analyze item relationships, such as:
  
  CJ20N: Project Builder
  CJ03: Display Work Breakdown Structure (WBS)
  CO03: Display Production Order
  
  
  SAP Notes: Check for any SAP Notes that might address this specific error or provide additional context.
  User Roles: Ensure that you have the necessary permissions to make changes to customer assignments and item relationships.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to change the customer assignment successfully.