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

GEF_CORE_MSG016 - Overview

• 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

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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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GEF_CORE_MSG016 - Details

• 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