How To Fix ME504 - First record of sequential file & is not a session record (type 0)

SAP Error Message - Details

• Message type: E = Error

• Message class: ME - Purchasing: General Messages

• Message number: 504

• Message text: First record of sequential file & is not a session record (type 0)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ME504 - First record of sequential file & is not a session record (type 0) ?

  The SAP error message ME504, which states "First record of sequential file & is not a session record (type 0)," typically occurs in the context of data processing, particularly when dealing with batch input sessions or file uploads in SAP. This error indicates that the system is expecting a specific format for the first record of a sequential file, but it is not receiving it.
  Cause:
  
  Incorrect File Format: The file being processed does not conform to the expected format. The first record should be a session record (type 0), but it is not.
  Corrupted File: The file may be corrupted or improperly generated, leading to unexpected content in the first record.
  Improper Data Preparation: The data preparation process may have errors, resulting in an incorrect structure or missing required fields.
  Wrong File Type: The file type being uploaded may not be compatible with the expected input for the transaction or program being executed.
  
  Solution:
  
  Check File Format: Ensure that the file being uploaded is in the correct format. The first record should be a session record (type 0). You may need to refer to the documentation for the specific transaction or program to understand the required format.
  Validate Data: Review the data in the file to ensure it is complete and correctly structured. Look for any anomalies in the first record.
  Re-generate the File: If the file is corrupted or improperly formatted, regenerate it from the source system or application, ensuring that it adheres to the required specifications.
  Use Transaction Codes: If you are using a specific transaction code for batch input, ensure that you are using the correct one and that it is configured properly.
  Test with Sample Data: Create a small sample file that meets the expected format and test it to see if the error persists. This can help isolate whether the issue is with the specific file or the process itself.
  
  Related Information:
  
  Batch Input Sessions: Understand how batch input sessions work in SAP, including the structure of session records and how they are processed.
  SAP Documentation: Refer to SAP's official documentation or help resources for detailed information on file formats and batch input processing.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM35 (for processing batch input sessions) and SE38 (for executing programs).
  Error Logs: Check the error logs for additional details that may provide more context about the issue.
  
  If the problem persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.