How To Fix FDT_CORE873 - No ruleset registered on the function

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_CORE - Formula & Derivation Tool: Core

• Message number: 873

• Message text: No ruleset registered on the function

What causes this issue?

For the current function, the system has determined that there is no
ruleset assigned. Since the function's execution mode is set to 'event
mode', this means that executing the function has no effect.
Note that this is not necessarily an issue. Although executing an empty
function does not make much sense, it can still be useful to provide
such a function. For example, the function may serve as a placeholder
that helps preventing the system from crashing in case there are already
programs in place calling the function. Also, under certain
circumstances, the function may be useless in the development system but
required in follow-on systems in your system landscape.

System Response

The object can be activated.

How to fix this error?

Make sure that the ruleset assignments are missing intentionally. In
case it turns out that rulesets should have been assigned, or that the
execution mode is wrong, take the necessary steps to correct the issue.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_CORE873 - No ruleset registered on the function ?

  The SAP error message FDT_CORE873: No ruleset registered on the function typically occurs in the context of SAP's Flexible Data Import (FDI) or Flexible Data Transfer (FDT) framework. This error indicates that the system is unable to find a ruleset associated with the function you are trying to execute. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Missing Ruleset: The function you are trying to use does not have an associated ruleset defined in the system.
  Configuration Issues: There may be a misconfiguration in the FDT settings or the ruleset might not have been activated properly.
  Transport Issues: If the ruleset was recently transported from another system, it may not have been properly imported or activated in the target system.
  Authorization Issues: The user executing the function may not have the necessary authorizations to access the ruleset.
  
  Solutions:
  
  
  Check Ruleset Configuration:
  
  Go to the FDT configuration and verify that the ruleset is correctly defined for the function you are trying to use.
  Ensure that the ruleset is active and properly linked to the function.
  
  
  
  Create or Assign a Ruleset:
  
  If no ruleset exists, you may need to create one and assign it to the function.
  Use transaction code FDT_RULE to create or manage rulesets.
  
  
  
  Transport and Activation:
  
  If the ruleset was transported, check the transport logs to ensure it was successfully imported.
  Activate the ruleset if it is not already active.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access the ruleset. You may need to check the roles and profiles assigned to the user.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on configuring FDT and rulesets.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the function to identify where the ruleset lookup is failing.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to FDT and rulesets.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Training and Documentation: Familiarize yourself with the FDT framework through SAP training materials or official documentation to better understand how rulesets are managed.
  
  By following these steps, you should be able to resolve the FDT_CORE873 error and ensure that the necessary ruleset is properly configured and accessible for the function you are trying to execute.