How To Fix CNV_PE_GEN123 - Structured parameter &1 has no fields

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_GEN - Messages for object generation

• Message number: 123

• Message text: Structured parameter &1 has no fields

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_GEN123 - Structured parameter &1 has no fields ?

  The SAP error message CNV_PE_GEN123 indicates that a structured parameter (likely a data structure or a table) is expected to have fields, but it appears to be empty or not defined correctly. This error typically arises in the context of data migration or conversion processes, particularly when using SAP's Conversion Tools or during the execution of programs that involve structured data.
  Cause:
  
  Empty Structure: The structure defined in the program or function module does not contain any fields. This could be due to a misconfiguration or an oversight in the data model.
  Incorrect Mapping: During data migration, the mapping of fields from the source to the target structure may not have been set up correctly, leading to an empty structure.
  Program Logic Error: There may be a logical error in the program that populates the structure, resulting in it not being filled with the expected data.
  Data Source Issues: The source data might be missing or not accessible, leading to the structure not being populated.
  
  Solution:
  
  Check Structure Definition: Verify the definition of the structured parameter in the ABAP program or function module. Ensure that it is defined correctly and contains the necessary fields.
  Review Data Mapping: If this error occurs during a data migration process, review the mapping configuration to ensure that all required fields are correctly mapped from the source to the target structure.
  Debugging: Use the ABAP debugger to step through the code and identify where the structure is supposed to be populated. Check for any conditions that might prevent it from being filled.
  Data Validation: Ensure that the source data is available and valid. If the source data is missing or incorrect, it may lead to an empty structure.
  Consult Documentation: Refer to SAP documentation or notes related to the specific transaction or program you are using. There may be known issues or additional configuration steps required.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be using transaction codes related to data migration (e.g., LSMW, LTMC).
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific version of SAP you are using.
  Community Forums: SAP Community and other forums can be helpful for finding similar issues faced by other users and potential solutions.
  
  If the issue persists after checking these areas, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.