How To Fix D-224 - Type 'O' sessions may only be sent to an internal service system

SAP Error Message - Details

• Message type: E = Error

• Message class: D- -

• Message number: 224

• Message text: Type 'O' sessions may only be sent to an internal service system

Self-Explanatory Message

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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 D-224 - Type 'O' sessions may only be sent to an internal service system ?

  The SAP error message D-224, which states "Type 'O' sessions may only be sent to an internal service system," typically occurs in the context of SAP's communication and session management, particularly when dealing with external systems or services.
  Cause:
  This error generally arises when there is an attempt to send a session of type 'O' (which stands for "Outbound") to a system that is not recognized as an internal service system. In SAP, outbound sessions are meant to be processed by internal systems, and sending them to external systems can lead to inconsistencies or errors in processing.
  Solution:
  To resolve this error, consider the following steps:
  
  
  Check System Configuration: Ensure that the system you are trying to send the session to is correctly configured as an internal service system. This may involve checking the system's settings in transaction codes like SM59 (RFC destinations) or SICF (HTTP services).
  
  
  Review Session Type: Verify that the session type is appropriate for the target system. If you are inadvertently trying to send an outbound session to an external system, you may need to change the session type or redirect it to the correct internal system.
  
  
  Adjust Communication Settings: If you are using middleware or integration tools (like SAP PI/PO or SAP CPI), ensure that the communication settings are correctly set up to handle outbound sessions.
  
  
  Consult Documentation: Review SAP documentation or notes related to session management and communication to ensure compliance with best practices.
  
  
  Check for Updates: Sometimes, this error can be related to bugs or issues in specific versions of SAP. Check for any available patches or updates that might address this issue.
  
  
  Contact SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance. They can provide more specific guidance based on your system configuration and the context of the error.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM21 (System Log), ST22 (Dump Analysis), and SLG1 (Application Log) to gather more information about the error context.
  SAP Notes: Search for SAP Notes related to D-224 or session management issues in the SAP Support Portal.
  System Logs: Check system logs for any additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to identify the root cause of the D-224 error and implement a suitable solution.