How To Fix BRF656 - System unable to convert expression &1 automatically

BRF656 - Overview

• Message type: E = Error

• Message class: BRF - Messages for Business Rule Framework

• Message number: 656

• Message text: System unable to convert expression &1 automatically

What causes this issue?

The system is unable to create any corresponding expression for a
certain functionality of BRF expression in the Formula and Derivation
Tool (FDT).

System Response

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

How to fix this error?

Try to create the expression manually in the FDT.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BRF656 - System unable to convert expression &1 automatically ?

  The SAP error message BRF656 ("System unable to convert expression &1 automatically") typically occurs in the context of Business Rule Framework (BRF+) when the system is unable to automatically convert an expression or a value to the expected data type. This can happen for various reasons, such as data type mismatches, incorrect configurations, or issues with the expressions defined in the rules.
  Causes:
  
  Data Type Mismatch: The expression or value being processed does not match the expected data type. For example, trying to use a string where a number is expected.
  Invalid Expressions: The expression defined in the BRF+ rule may be incorrectly formulated or may reference non-existent fields or variables.
  
  Configuration Issues: There may be issues with the configuration of the BRF+ application or the specific rule set being used.
  Missing or Incorrectly Defined Data Elements: If the data elements or structures referenced in the expression are not defined correctly, it can lead to