How To Fix SWF_BRF059 - Only functions with exactly one rule records can be used as references

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_BRF - Workflow and Business Rule Framework

• Message number: 059

• Message text: Only functions with exactly one rule records can be used as references

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SWF_BRF059 - Only functions with exactly one rule records can be used as references ?

  The SAP error message SWF_BRF059 indicates that you are trying to use a Business Rule Framework (BRF) function that has more than one rule record as a reference in a context where only functions with exactly one rule record are allowed. This typically occurs in scenarios where a decision-making process expects a single outcome but the function you are referencing can yield multiple outcomes.
  Cause:
  
  Multiple Rule Records: The function you are trying to reference has multiple rules defined, which means it can return multiple results based on the input parameters.
  Incorrect Function Usage: The function is being used in a context (like a decision table or another function) that requires a single, definitive output.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Function Definition:
  
  Go to the BRF+ workbench and check the function that you are trying to reference.
  Ensure that it has only one rule defined. If it has multiple rules, you will need to either consolidate them into a single rule or create a new function that encapsulates the logic you need with a single rule.
  
  
  
  Modify the Function:
  
  If the function is intended to have multiple rules, consider creating a new function that uses a decision table or a different logic structure that can handle multiple outcomes but returns a single result.
  
  
  
  Use a Decision Table:
  
  If applicable, consider using a decision table that can evaluate conditions and return a single result based on the input parameters.
  
  
  
  Review the Calling Context:
  
  Ensure that the context in which you are calling the function is appropriate for a function that returns a single result. If you are using it in a decision-making process, ensure that the logic aligns with the expected output.
  
  
  
  Testing:
  
  After making changes, test the function to ensure that it behaves as expected and that the error does not reoccur.
  
  
  
  Related Information:
  
  BRF+ Documentation: Familiarize yourself with the BRF+ documentation provided by SAP, which can give you insights into how to structure functions and rules effectively.
  SAP Community: Engage with the SAP Community forums for additional insights and solutions from other users who may have encountered similar issues.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance on best practices for using BRF+ functions.
  
  By following these steps, you should be able to resolve the SWF_BRF059 error and ensure that your BRF+ functions are set up correctly for your business logic needs.