How To Fix PSB_API_MSGCL090 - Invalid combination of activity type selected for &1 &2

SAP Error Message - Details

• Message type: E = Error

• Message class: PSB_API_MSGCL -

• Message number: 090

• Message text: Invalid combination of activity type selected for &1 &2

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 PSB_API_MSGCL090 - Invalid combination of activity type selected for &1 &2 ?

  The SAP error message PSB_API_MSGCL090 indicates that there is an invalid combination of activity types selected for a specific project or work breakdown structure (WBS) element. This error typically occurs in the context of project system (PS) modules when trying to assign or process activities that do not align with the expected configurations or settings.
  Cause:
  
  Invalid Activity Type: The activity type you are trying to use may not be valid for the specific project or WBS element.
  Configuration Issues: There may be configuration settings in the project system that restrict the use of certain activity types for specific projects or WBS elements.
  Missing Assignments: The activity type may not be assigned to the relevant controlling area or may not be set up correctly in the system.
  Inconsistent Data: There may be inconsistencies in the data related to the project or WBS element that lead to this error.
  
  Solution:
  
  
  Check Activity Type Configuration:
  
  Go to the configuration settings for activity types in the SAP system.
  Ensure that the activity type you are trying to use is correctly configured and assigned to the relevant project or WBS element.
  
  
  
  Validate Project/WBS Element:
  
  Verify that the project or WBS element you are working with is set up correctly and that it allows for the use of the specified activity type.
  Check if there are any restrictions or settings that might prevent the use of the activity type.
  
  
  
  Review Assignment of Activity Types:
  
  Ensure that the activity type is assigned to the correct controlling area and that it is active for the project type you are working with.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources related to project systems and activity types to understand the valid combinations and configurations.
  
  
  
  Check for Updates or Notes:
  
  Look for any SAP Notes or updates that might address this specific error or provide additional guidance on resolving it.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CJ20N (Project Builder) or CJ02 (Change Project) to review and modify project settings.
  Customizing Settings: The relevant customizing settings can be accessed via the SPRO transaction code, where you can navigate to the Project System settings.
  Documentation: SAP Help Portal and community forums can provide additional insights and user experiences related to this error.
  
  By following these steps, you should be able to identify the root cause of the error and implement the necessary changes to resolve it.