How To Fix CNV_CDMC_UCIA157 - File must have valid header. Please check long text.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CDMC_UCIA - CDMC Upgrade/Change Impact Analysis

• Message number: 157

• Message text: File must have valid header. Please check long text.

The first row of the file must have the header in the following
sequence:
OBJECT TYPE, OBJECT NAME, DEVCLASS.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_CDMC_UCIA157 - File must have valid header. Please check long text. ?

  The SAP error message CNV_CDMC_UCIA157 indicates that a file being processed does not have a valid header. This error typically occurs in the context of data migration or data conversion processes, particularly when using the SAP Conversion Tools or the SAP Data Migration Cockpit.
  Cause:
  The error is caused by one or more of the following issues:
  
  Missing or Incorrect Header: The file being uploaded or processed does not contain a header row, or the header row does not match the expected format.
  File Format Issues: The file may not be in the expected format (e.g., CSV, TXT) or may have incorrect delimiters.
  Data Structure Mismatch: The structure of the data in the file does not align with the expected structure defined in the SAP system.
  Encoding Issues: The file may have encoding issues that prevent the system from reading the header correctly.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check the File Format:
  
  Ensure that the file is in the correct format (e.g., CSV, TXT) and that it is not corrupted.
  
  
  
  Verify the Header:
  
  Open the file and check the header row. Ensure that it contains all the required fields and that the field names match the expected names in the SAP system.
  Make sure there are no extra spaces or special characters in the header.
  
  
  
  Review the Data Structure:
  
  Confirm that the data structure in the file matches the structure expected by the SAP system. This includes the number of columns and the data types.
  
  
  
  Check Delimiters:
  
  If the file is a CSV, ensure that the correct delimiter (e.g., comma, semicolon) is being used and that it is consistent throughout the file.
  
  
  
  Encoding:
  
  Ensure that the file is saved with the correct encoding (e.g., UTF-8) to avoid any issues with special characters.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or the specific migration tool documentation for details on the expected file format and structure.
  
  
  
  Test with Sample Data:
  
  If possible, create a small sample file with a valid header and a few rows of data to test if the issue persists.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the specific migration tool you are using for any known issues or additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Logs and Traces: Review any logs or traces generated during the data upload process for additional error messages or warnings that may provide more context.
  
  By following these steps, you should be able to identify and resolve the issue causing the CNV_CDMC_UCIA157 error message.