How To Fix PO441 - Self-reference in standard device type

SAP Error Message - Details

• Message type: E = Error

• Message class: PO - Spooler message

• Message number: 441

• Message text: Self-reference in standard device type

What causes this issue?

The standard device type for a device type is in a loop, at it refers
back to the current device type (possible through multiple
levels).

System Response

This device type cannot be used in this manner by the spool service.

How to fix this error?

Choose a loop-free standard device type.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PO441 - Self-reference in standard device type ?

  The SAP error message PO441, which states "Self-reference in standard device type," typically occurs when there is a configuration issue related to the device type in SAPscript or Smart Forms. This error indicates that the system is trying to reference a device type that is incorrectly set up, leading to a circular reference.
  Cause:
  
  Incorrect Device Type Configuration: The device type may be incorrectly configured in the SAP system, leading to a self-reference.
  Missing or Incorrect Printer Assignment: The printer may not be correctly assigned to the device type, or the device type may not be properly defined in the system.
  Custom Device Types: If you are using a custom device type, it may not be set up correctly, leading to this error.
  
  Solution:
  
  
  Check Device Type Configuration:
  
  Go to transaction code SPAD (Spool Administration).
  Navigate to the "Device Types" section and check the configuration of the device type that is causing the error.
  Ensure that the device type does not reference itself in any of its settings.
  
  
  
  Verify Printer Assignment:
  
  In the same SPAD transaction, check the printers assigned to the device type.
  Ensure that the printer is correctly assigned and that there are no circular references.
  
  
  
  Review Custom Device Types:
  
  If you are using a custom device type, review its configuration to ensure that it is set up correctly.
  Compare it with standard device types to identify any discrepancies.
  
  
  
  Test with Standard Device Types:
  
  If possible, try using a standard device type to see if the error persists. This can help isolate whether the issue is with the custom device type or a broader configuration issue.
  
  
  
  Check for Updates or Notes:
  
  Sometimes, SAP releases notes or updates that address specific issues. Check the SAP Support Portal for any relevant notes regarding this error.
  
  
  
  Consult Documentation:
  
  Review SAP documentation related to device types and spool administration for additional guidance.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  SPAD - Spool Administration
  SP01 - Spool Request Overview
  
  
  SAP Notes: Search for SAP Notes related to PO441 or device type configuration for any specific patches or recommendations.
  Community Forums: Consider checking SAP Community forums or other technical forums for similar issues and solutions shared by other users.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.