How To Fix CNV_PE_IF028 - Parameter &1 is not allowed in the comparison

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_IF - Messages for interface and interface mapping handling

• Message number: 028

• Message text: Parameter &1 is not allowed in the comparison

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_IF028 - Parameter &1 is not allowed in the comparison ?

  The SAP error message CNV_PE_IF028, which states "Parameter &1 is not allowed in the comparison," typically occurs in the context of data migration or conversion processes, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools. This error indicates that a specific parameter being used in a comparison operation is not valid or not permitted in the current context.
  Cause:
  
  Invalid Parameter: The parameter specified in the error message (&1) is not recognized or is not allowed for the operation being performed.
  Configuration Issues: There may be misconfigurations in the data migration settings or parameters that are being used.
  Data Type Mismatch: The parameter may be of a different data type than expected, leading to an invalid comparison.
  Business Logic Constraints: The business logic defined in the migration process may restrict certain parameters from being used in comparisons.
  
  Solution:
  
  Check Parameter Validity: Review the parameter specified in the error message. Ensure that it is valid for the context in which it is being used.
  Review Configuration: Go through the configuration settings of the data migration tool or process. Ensure that all parameters are correctly set up and that there are no typos or incorrect values.
  Data Type Verification: Verify that the data types of the parameters being compared are compatible. If there is a mismatch, adjust the data types accordingly.
  Consult Documentation: Refer to the SAP documentation or help resources related to the specific migration tool you are using. There may be guidelines on which parameters are allowed in comparisons.
  Debugging: If possible, enable debugging or logging to get more detailed information about the context in which the error occurs. This can help identify the root cause.
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide insights based on the specific scenario.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Community Forums: Look for discussions in SAP community forums or platforms like SAP Community, where other users may have encountered and resolved similar issues.
  Documentation: Review the official SAP documentation for the specific data migration tool you are using, as it may contain information about valid parameters and their usage.
  
  By following these steps, you should be able to identify the cause of the CNV_PE_IF028 error and implement a suitable solution.