How To Fix SRT_LPREG002 - Could not find class name for interface '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_LPREG - Logical Port Registry

• Message number: 002

• Message text: Could not find class name for interface '&1'

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SRT_LPREG002 - Could not find class name for interface '&1' ?

  The SAP error message SRT_LPREG002 indicates that the system could not find a class name for a specified interface. This error typically occurs in the context of SAP's web services or when using the SAP NetWeaver Process Integration (PI) or Process Orchestration (PO) components.
  Cause:
  
  Missing Class Implementation: The most common cause is that the class that implements the specified interface is not available in the system. This could be due to a missing or incorrectly deployed service or component.
  Incorrect Configuration: The interface might be incorrectly configured in the service registry or in the relevant configuration settings.
  Transport Issues: If the relevant classes or interfaces were transported from one system to another, there might have been issues during the transport process.
  Namespace Issues: The interface might be in a different namespace than expected, leading to the system being unable to locate it.
  
  Solution:
  
  
  Check Class Implementation:
  
  Verify that the class implementing the interface exists in the system. You can do this by checking the relevant ABAP class in transaction SE80 or SE24.
  If the class is missing, you may need to create it or transport it from another system.
  
  
  
  Review Configuration:
  
  Check the configuration settings in the Service Registry (transaction SOAMANAGER) to ensure that the interface is correctly defined and linked to the appropriate class.
  Ensure that the service is correctly registered and that the endpoint is properly configured.
  
  
  
  Transport Check:
  
  If the issue arose after a transport, check the transport logs for any errors or warnings that might indicate problems with the transport of the relevant objects.
  Re-transport the necessary objects if needed.
  
  
  
  Namespace Verification:
  
  Ensure that the interface and its implementation are in the correct namespace. If there are discrepancies, you may need to adjust the configuration or the class definition.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date with the latest support packages and patches, as this can sometimes resolve underlying issues.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SE80 (Object Navigator) for checking classes.
  SE24 (Class Builder) for viewing and editing class definitions.
  SOAMANAGER for managing web service configurations.
  
  
  
  SAP Notes: 
  
  Search for relevant SAP Notes in the SAP Support Portal that might address this specific error or provide additional troubleshooting steps.
  
  
  
  Documentation: 
  
  Review the SAP documentation related to web services and the specific components you are using (e.g., PI/PO) for more context on how interfaces and classes are managed.
  
  
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.