How To Fix PU420 - Cannot find import steps that are independent of requests

SAP Error Message - Details

• Message type: E = Error

• Message class: PU - Upgrade and Transport Log Messages

• Message number: 420

• Message text: Cannot find import steps that are independent of requests

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message PU420 - Cannot find import steps that are independent of requests ?

  The SAP error message PU420, which states "Cannot find import steps that are independent of requests," typically occurs during the transport of changes in the SAP system. This error indicates that the system is unable to find the necessary import steps that are not dependent on other requests, which can hinder the transport process.
  Causes:
  
  Missing Transport Requests: The transport request that contains the changes may not be available in the target system.
  Incorrect Transport Directory: The transport directory may not be correctly set up, leading to issues in locating the transport requests.
  Transport Layer Issues: There may be issues with the transport layer configuration, which can affect the import process.
  Dependencies on Other Requests: The request you are trying to import may have dependencies on other transport requests that have not been imported yet.
  Transport Management System (TMS) Configuration: Misconfiguration in the TMS can lead to issues in finding the correct import steps.
  
  Solutions:
  
  Check Transport Requests: Ensure that all necessary transport requests are available in the target system. You can use transaction code SE09 or SE10 to check the status of transport requests.
  Review Dependencies: Check if the transport request you are trying to import has dependencies on other requests. If so, ensure that those requests are imported first.
  Verify Transport Directory: Make sure that the transport directory is correctly configured and that the transport files are present in the expected locations.
  Check TMS Configuration: Review the Transport Management System configuration to ensure that it is set up correctly. You can use transaction code STMS to access the TMS configuration.
  Re-import the Transport Request: If the transport request is corrupted or incomplete, you may need to re-export it from the source system and then import it again into the target system.
  Consult SAP Notes: Check for any relevant SAP Notes that may address this specific error. SAP Notes can provide additional insights or patches that may resolve the issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SE09, SE10, and STMS for managing transport requests and configurations.
  Transport Logs: Review transport logs for more detailed error messages that can provide insights into what went wrong during the import process.
  SAP Community: Engage with the SAP Community or forums for additional support and shared experiences from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.