How To Fix AP171 - You can only select by choosing exactly one object type

SAP Error Message - Details

• Message type: E = Error

• Message class: AP - Investment program messages

• Message number: 171

• Message text: You can only select by choosing exactly one object type

What causes this issue?

Selecting specific orders, projects, WBS elements or appropriation
requests is only possible if you set just one of the indicators: either
"orders," "WBS elements," or "measures for appropriation requests."

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AP171 - You can only select by choosing exactly one object type ?

  The SAP error message AP171 ("You can only select by choosing exactly one object type") typically occurs when a user attempts to perform an action that requires a specific selection of object types, but multiple object types have been selected instead. This can happen in various SAP transactions, particularly in areas related to asset management, project management, or reporting.
  Cause:
  The error is triggered when:
  
  The user selects more than one object type (e.g., multiple asset classes, project types, etc.) in a selection screen where only one type is allowed.
  The system is designed to process only a single object type at a time for the specific transaction or report being executed.
  
  Solution:
  To resolve this error, follow these steps:
  
  Review Your Selection Criteria: Go back to the selection screen where the error occurred. Check the fields where you have made selections.
  Limit Your Selection: Ensure that you are selecting only one object type. If you have multiple selections, deselect the additional object types so that only one remains selected.
  Re-run the Transaction: After making the necessary adjustments to your selection criteria, try executing the transaction or report again.
  
  Related Information:
  
  Transaction Codes: This error can occur in various transaction codes, such as those related to asset accounting (e.g., AS01, AS02) or project management (e.g., CJ20N).
  Documentation: Refer to SAP documentation or help files for the specific transaction you are using to understand the selection criteria better.
  User Permissions: Ensure that you have the necessary permissions to access the object types you are trying to select.
  SAP Notes: Check for any relevant SAP Notes that might address this error or provide additional context or fixes.
  
  If the problem persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.