How To Fix GEF_CORE_MSG016 - No implementation of BO service method 'compose_objkey'.

SAP Error Message - Details

• Message type: E = Error

• Message class: GEF_CORE_MSG - Message class for GEF core

• Message number: 016

• Message text: No implementation of BO service method 'compose_objkey'.

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message GEF_CORE_MSG016 - No implementation of BO service method 'compose_objkey'. ?

  The SAP error message GEF_CORE_MSG016 indicates that there is no implementation of the Business Object (BO) service method compose_objkey. This error typically arises in the context of SAP Business Workflow or when working with Business Object services in SAP systems, particularly in SAP Cloud Platform or SAP S/4HANA environments.
  Cause:
  
  
  Missing Implementation: The most common cause of this error is that the method compose_objkey has not been implemented in the Business Object service you are trying to use. This method is usually responsible for composing the object key for a specific business object.
  
  
  Incorrect Configuration: There may be a misconfiguration in the service definition or the way the business object is being called.
  
  
  Version Mismatch: If you are using a version of the service that does not support this method, or if there are compatibility issues between different components of the SAP system.
  
  
  Transport Issues: If the business object or its implementation was recently transported from one system to another, it may not have been fully implemented or activated in the target system.
  
  
  Solution:
  
  
  Check Implementation: Verify if the compose_objkey method is implemented in the Business Object service. If it is not, you may need to implement it yourself or check with your development team to see if it is available in a different version.
  
  
  Review Configuration: Ensure that the configuration for the Business Object and its service is correct. Check the service definition and ensure that all required methods are properly defined and implemented.
  
  
  Update or Patch: If you suspect a version mismatch or a bug, check for any available updates or patches for your SAP system that might address this issue.
  
  
  Transport Validation: If the issue arose after a transport, validate that all necessary components were transported correctly and that the business object is activated in the target system.
  
  
  Consult Documentation: Refer to the official SAP documentation for the specific Business Object you are working with. This can provide insights into required methods and their implementations.
  
  
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance. They can provide guidance based on the specific context of your implementation.
  
  
  Related Information:
  
  SAP Business Object Documentation: Review the documentation for the specific Business Object you are working with to understand its methods and requirements.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  Debugging Tools: Utilize SAP debugging tools to trace the execution flow and identify where the error is occurring, which can provide more context for troubleshooting.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.