How To Fix OL820 - Key field '&' is not defined for object type '&'

SAP Error Message - Details

• Message type: E = Error

• Message class: OL - Workflow object types: Run-time system

• Message number: 820

• Message text: Key field '&' is not defined for object type '&'

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message OL820 - Key field '&' is not defined for object type '&' ?

  The SAP error message OL820 indicates that a key field is not defined for a specific object type. This typically occurs in the context of object management, where the system expects a certain key field to be present for a given object type, but it is either missing or not properly configured.
  Cause:
  
  Missing Key Field Definition: The key field that the system is looking for has not been defined in the relevant configuration settings.
  Incorrect Object Type: The object type being referenced may not be correctly set up or may not exist in the system.
  Custom Development Issues: If there are custom developments or enhancements, they may not be correctly handling the key fields for the specified object type.
  Transport Issues: If the object type was recently transported from another system, the key field definitions may not have been included or may not match the target system's configuration.
  
  Solution:
  
  
  Check Configuration: 
  
  Go to the relevant configuration transaction (e.g., SPRO) and verify that the key field is defined for the object type in question.
  Ensure that the object type is correctly configured and that all necessary fields are included.
  
  
  
  Review Object Type:
  
  Confirm that the object type you are working with is valid and exists in the system.
  Check if there are any recent changes or updates that might have affected the object type.
  
  
  
  Debugging:
  
  If you have access to debugging tools, you can trace the program or function module that is generating the error to identify where the key field is being referenced and why it is not found.
  
  
  
  Check Custom Code:
  
  If there are custom developments, review the code to ensure that it correctly handles the key fields for the specified object type.
  Look for any hard-coded values or assumptions that may not hold true in the current environment.
  
  
  
  Transport Requests:
  
  If the issue arose after a transport, check the transport request to ensure that all necessary objects and configurations were included.
  If needed, re-transport the missing configurations.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific object type and key fields to ensure compliance with best practices.
  
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide additional troubleshooting steps.
  Community Forums: Check SAP Community forums or other user groups for similar issues and solutions shared by other users.
  SAP Help Portal: Utilize the SAP Help Portal for detailed information on object types and key field configurations.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.