How To Fix ACI_API056 - Illegal conditional: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ACI_API - EXPERIMENTAL, DON'T USE (Messages raised by the ACI's API)

• Message number: 056

• Message text: Illegal conditional: &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ACI_API056 - Illegal conditional: &1 ?

  The SAP error message ACI_API056 "Illegal conditional: &1" typically occurs in the context of the SAP Application Interface Framework (AIF) when there is an issue with the conditional logic defined in an interface configuration. This error indicates that the condition specified in the interface is not valid or cannot be processed as expected.
  Cause:
  
  Invalid Condition Syntax: The condition defined in the interface might have a syntax error or is not following the expected format.
  Unsupported Operators: The condition may be using operators or functions that are not supported by the AIF.
  Data Type Mismatch: The data types of the fields being compared in the condition may not match, leading to an illegal comparison.
  Missing or Incorrect Field References: The fields referenced in the condition may not exist or may be incorrectly specified.
  
  Solution:
  
  Review the Condition Logic: Check the condition defined in the AIF configuration for any syntax errors or unsupported operators. Ensure that the condition is logically correct.
  Check Data Types: Ensure that the fields being compared in the condition have compatible data types. If necessary, convert data types to match.
  Validate Field References: Make sure that all field references in the condition are correct and that the fields exist in the context of the interface.
  Consult Documentation: Refer to the SAP documentation for the Application Interface Framework to understand the correct syntax and supported features for defining conditions.
  Testing: After making changes, test the interface to ensure that the error is resolved and that the conditions are functioning as expected.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or fixes related to this error message.
  AIF Configuration: Familiarize yourself with the AIF configuration settings and best practices for defining conditions.
  Debugging: If the issue persists, consider enabling debugging or logging to capture more detailed information about the error context.
  
  If you continue to experience issues after following these steps, it may be helpful to reach out to SAP support or consult with a technical expert familiar with AIF configurations.