How To Fix AP123 - Selecting by projects and WBS elements at the same time is not logical

SAP Error Message - Details

• Message type: E = Error

• Message class: AP - Investment program messages

• Message number: 123

• Message text: Selecting by projects and WBS elements at the same time is not logical

What causes this issue?

You selected by projects and WBS elements at the same time.
Since the WBS element ID is unique across projects, it is not necessary
to limit according to projects at the same time.

System Response

In order to avoid inconsistencies, selecting by projects and WBS
elements at the same time is not allowed.

How to fix this error?

Select <ZH>either</> by projects <ZH>or</> by WBS elements.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AP123 - Selecting by projects and WBS elements at the same time is not logical ?

  The SAP error message AP123, which states "Selecting by projects and WBS elements at the same time is not logical," typically occurs in the context of project management and reporting within SAP. This error arises when a user attempts to select both project and WBS (Work Breakdown Structure) elements simultaneously in a report or transaction where such a selection is not permitted.
  Cause:
  
  Logical Conflict: The error is triggered because the system does not allow the simultaneous selection of both project and WBS elements. In SAP, a project can contain multiple WBS elements, and selecting both can create ambiguity in the data retrieval process.
  Incorrect Selection Criteria: Users may inadvertently select both criteria in a report or transaction, leading to this error.
  
  Solution:
  
  Review Selection Criteria: Check the selection criteria you are using in the report or transaction. Ensure that you are only selecting either a project or a WBS element, but not both at the same time.
  Adjust Report Parameters: If you are using a report, modify the parameters to exclude one of the selections. For example, if you are selecting a project, remove any WBS element selections.
  Consult Documentation: Refer to the SAP documentation or help files related to the specific transaction or report you are using to understand the selection logic better.
  User Training: If this error occurs frequently, consider providing training to users on how to properly use the selection criteria in SAP.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or updates regarding this error message.
  Transaction Codes: Familiarize yourself with the specific transaction codes where this error may occur, such as CJ20N (Project Builder) or other project management-related transactions.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  By following these steps, you should be able to resolve the AP123 error and improve your understanding of how to work with projects and WBS elements in SAP.