How To Fix CRM_BRF024 - Tag cannot be used in expression since result is complex

SAP Error Message - Details

• Message type: E = Error

• Message class: CRM_BRF -

• Message number: 024

• Message text: Tag cannot be used in expression since result is complex

What causes this issue?

You have selected a tag in the expression that returns a complex data
type as the result.

System Response

The result of this tag determines the result of the entire expression.
Consequently, the expresion would have a complex data type. This is not
possible.

How to fix this error?

Select a tag or a superordinate or subordinate level that does not
return a complex data type as the the result.

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 CRM_BRF024 - Tag cannot be used in expression since result is complex ?

  The SAP error message CRM_BRF024 indicates that a tag cannot be used in an expression because the result is complex. This typically occurs in the context of Business Rule Framework (BRF) in SAP, where you are trying to use a tag that is expected to return a simple value (like a string or number) but is instead returning a complex data structure (like a table or a record).
  Cause:
  
  Complex Data Type: The tag you are trying to use in your expression is defined as a complex data type, which means it contains multiple fields or attributes. Expressions in BRF typically expect simple data types for evaluation.
  Incorrect Tag Usage: You might be trying to use a tag in a context where a simple value is required, such as in a condition or an assignment where only scalar values are allowed.
  Misconfiguration: There may be a misconfiguration in the way the tag is defined or how it is being referenced in the rule.
  
  Solution:
  
  Check Tag Definition: Review the definition of the tag in the BRF configuration. Ensure that it is defined as a simple type if you intend to use it in a simple expression.
  Use Appropriate Expressions: If you need to use a complex type, consider accessing specific fields within that complex type instead of the entire tag. For example, if the tag is a structure with multiple fields, reference a specific field that is of a simple type.
  Modify the Rule Logic: If the logic of your rule requires the use of complex data, you may need to adjust your rule to handle the complex data appropriately, possibly by using additional rules or functions to extract the necessary information.
  Consult Documentation: Refer to the SAP documentation for BRF to understand how to work with complex data types and the limitations of expressions.
  
  Related Information:
  
  BRF Documentation: SAP provides extensive documentation on the Business Rule Framework, which can help you understand how to work with different data types and expressions.
  SAP Community: Engaging with the SAP Community forums can provide insights from other users who may have encountered similar issues.
  Debugging Tools: Use the debugging tools available in SAP to trace the execution of your rules and see where the complex data type is being introduced.
  
  By addressing the above points, you should be able to resolve the CRM_BRF024 error and successfully implement your business rules in SAP.