How To Fix DPR_PARTICIPANT502 - Select objects of only one object category

SAP Error Message - Details

• Message type: E = Error

• Message class: DPR_PARTICIPANT - Roles: Messages

• Message number: 502

• Message text: Select objects of only one object category

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DPR_PARTICIPANT502 - Select objects of only one object category ?

  The SAP error message DPR_PARTICIPANT502, which states "Select objects of only one object category," typically occurs in the context of SAP Project Management or SAP Portfolio and Project Management (PPM). This error indicates that the user is trying to perform an action that requires the selection of objects from a single category, but multiple categories have been selected instead.
  Cause:
  The error is caused by selecting multiple objects from different categories when the system expects only one category to be selected. For example, if you are trying to assign participants to a project and you have selected both projects and tasks, the system will throw this error because it cannot process multiple object types simultaneously.
  Solution:
  To resolve this error, follow these steps:
  
  
  Review Your Selection: Check the objects you have selected. Ensure that all selected objects belong to the same category (e.g., all should be projects, or all should be tasks).
  
  
  Deselect Unwanted Objects: If you have selected objects from different categories, deselect the ones that do not belong to the category you intend to work with.
  
  
  Perform the Action Again: After ensuring that only one category of objects is selected, try to perform the action again.
  
  
  Check Documentation: If you are unsure about the categories of the objects you are working with, refer to the SAP documentation or help resources for clarification on object categories in your specific context.
  
  
  Related Information:
  
  Object Categories: Familiarize yourself with the different object categories in SAP PPM, such as projects, tasks, milestones, etc. Understanding these categories will help you avoid similar errors in the future.
  User Permissions: Ensure that you have the necessary permissions to access and manipulate the selected objects.
  SAP Notes: Check for any relevant SAP Notes or updates that might address this error or provide additional context.
  
  If the problem persists after following these steps, consider reaching out to your SAP support team or consulting the SAP community for further assistance.