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.

Unfortunately, there isn't any extra information in this error notice.

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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