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