How To Fix BRF139 - The expressions of WHEN lines do not all deliver the same result type

BRF139 - Overview

• Message type: E = Error

• Message class: BRF - Messages for Business Rule Framework

• Message number: 139

• Message text: The expressions of WHEN lines do not all deliver the same result type

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message BRF139 - The expressions of WHEN lines do not all deliver the same result type ?

  The SAP error message BRF139 indicates that there is a mismatch in the result types of the expressions defined in the WHEN lines of a Business Rule Framework (BRF) decision table or rule. This typically occurs when the conditions specified in the WHEN lines evaluate to different data types, which is not allowed in BRF.
  
  Cause:
  The error arises when:
  
  The expressions in the WHEN lines return different data types (e.g., some return a string while others return a number).
  The result types of the expressions are not compatible with each other, leading to ambiguity in the evaluation of the rules.
  
  
  Solution:
  To resolve the BRF139 error, follow these steps:
  
  
  Review the Expressions: Check each WHEN line in your decision table or rule. Ensure that all expressions return the same data type. For example, if one expression returns a string, all others should also return strings.
  
  
  Modify Data Types: If you find that some expressions return different types,