How To Fix MG101 - Session &: first transaction does not begin with header record


MG101 - Overview

  • Message type: E = Error

  • Message class: MG - Batch input: material master

  • Message number: 101

  • Message text: Session &: first transaction does not begin with header record

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  • Self-Explanatory Message

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    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 MG101 - Session &: first transaction does not begin with header record ?
    The SAP error message MG101 indicates that there is an issue with the data being processed in a session, specifically that the first transaction in the session does not begin with a header record. This error typically occurs during the processing of IDocs or when importing data into SAP using batch input sessions.
    
    Cause: Missing Header Record: The first record in the session is expected to be a header record, but it is either missing or incorrectly formatted. Incorrect File Format: The file being processed may not be in the expected format, leading to the system not recognizing the first record as a header. Data Corruption: The data file may be corrupted or improperly structured, causing the system to misinterpret the records. Session Configuration: The session may not be configured correctly to handle the incoming data.
    Solution: Check the Input File: Ensure that the input file being processed has the correct structure. The first line should be

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