How To Fix GLE_MCA521 - First record in the file is not a session record

SAP Error Message - Details

• Message type: E = Error

• Message class: GLE_MCA - Multicurrency Accounting

• Message number: 521

• Message text: First record in the file is not a session record

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 GLE_MCA521 - First record in the file is not a session record ?

  The SAP error message GLE_MCA521, which states "First record in the file is not a session record," typically occurs during the data upload process, particularly when using the SAP Data Transfer Workbench or similar tools for uploading data into SAP systems. This error indicates that the system is expecting a specific format for the first record of the file being processed, but it does not match the expected session record format.
  Cause:
  
  Incorrect File Format: The file being uploaded does not start with the required session record. The first line of the file should contain specific identifiers that indicate it is a session record.
  Corrupted File: The file may be corrupted or improperly formatted, leading to the first record not being recognized as a session record.
  Wrong File Type: The file type being uploaded may not be compatible with the expected input for the transaction or program being used.
  Manual Edits: If the file was manually edited, it might have introduced errors or removed necessary session record identifiers.
  
  Solution:
  
  Check File Format: Ensure that the file adheres to the required format. The first line should typically contain session-specific information. Refer to the documentation for the specific data upload method you are using to confirm the expected format.
  Use a Template: If available, use a template file provided by SAP for the specific data upload process. This can help ensure that the structure and content of the file are correct.
  Validate the File: Use a text editor or a file validation tool to check the contents of the file. Ensure that the first line matches the expected session record format.
  Recreate the File: If the file is corrupted or improperly formatted, consider recreating it from the source data, ensuring that the first record is correctly formatted as a session record.
  Consult Documentation: Review the SAP documentation related to the specific data upload process you are using to ensure compliance with the required formats and structures.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or updates related to the specific transaction or data upload method you are using.
  Transaction Codes: Familiarize yourself with the transaction codes related to data uploads, such as LSMW (Legacy System Migration Workbench) or BAPIs (Business Application Programming Interfaces).
  Community Forums: Consider searching or posting in SAP community forums for additional insights or similar experiences from other users.
  
  By following these steps, you should be able to resolve the GLE_MCA521 error and successfully upload your data into the SAP system.