How To Fix SRT_REG091 - IDoc service with key &1 is not registered. Unregistration not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_REG - SRT Registry

• Message number: 091

• Message text: IDoc service with key &1 is not registered. Unregistration not possible

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SRT_REG091 - IDoc service with key &1 is not registered. Unregistration not possible ?

  The SAP error message SRT_REG091 indicates that there is an issue with the registration of an IDoc service in the SAP system. Specifically, it means that the IDoc service with the specified key is not registered, and as a result, unregistration is not possible. This error typically occurs in the context of SAP Process Integration (PI) or SAP Process Orchestration (PO) when dealing with IDocs.
  Cause
  The error can be caused by several factors, including:
  
  Service Not Registered: The IDoc service you are trying to use has not been registered in the system.
  Configuration Issues: There may be configuration issues in the Integration Directory or in the IDoc adapter settings.
  Transport Issues: If the IDoc service was recently transported from another system, it may not have been properly registered in the target system.
  System Errors: There could be underlying system errors or inconsistencies in the SAP environment.
  
  Solution
  To resolve the SRT_REG091 error, you can follow these steps:
  
  
  Check Service Registration:
  
  Go to transaction SRT_UTIL in the SAP GUI.
  Check the list of registered services to see if the IDoc service with the specified key is present.
  If it is not registered, you may need to register it manually.
  
  
  
  Register the IDoc Service:
  
  If the service is not registered, you can register it using the appropriate configuration tools in SAP PI/PO.
  Ensure that the IDoc service is correctly defined in the Integration Directory.
  
  
  
  Review Configuration:
  
  Check the configuration settings for the IDoc adapter in the Integration Directory.
  Ensure that all necessary parameters are correctly set.
  
  
  
  Transport Issues:
  
  If the IDoc service was transported, ensure that all necessary objects and configurations were included in the transport request.
  You may need to re-transport the service or manually configure it in the target system.
  
  
  
  Check Logs:
  
  Review the application logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  
  
  
  Restart Services:
  
  Sometimes, restarting the relevant services or the entire SAP system can resolve transient issues.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to IDoc services and registration for any specific guidance or known issues.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information
  
  IDoc Basics: Understanding how IDocs work in SAP and their role in data exchange.
  SAP PI/PO Documentation: Familiarize yourself with the configuration and management of services in SAP Process Integration and Process Orchestration.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as WE20 (Partner Profiles), WE21 (Port Definition), and SRT_UTIL (Service Registry).
  
  By following these steps, you should be able to diagnose and resolve the SRT_REG091 error effectively.