How To Fix E0744 - IDoc transfer: First record is not an IDoc control record

SAP Error Message - Details

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 744

• Message text: IDoc transfer: First record is not an IDoc control record

What causes this issue?

The first record transferred must always be a control record. The first
10 letters of a transferred control record are 'EDI_DC '.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Data stream: &v1&

System Response

How to fix this error?

If the error keeps occurring, activate the CPI-C trace functionality.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E0744 - IDoc transfer: First record is not an IDoc control record ?

  The SAP error message E0744, which states "IDoc transfer: First record is not an IDoc control record," typically occurs during the processing of IDocs (Intermediate Documents) in SAP. This error indicates that the system expected the first record of the IDoc to be a control record, but it found something else instead. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Incorrect File Format: The file being processed may not be in the correct IDoc format. The first line should contain the control record, but if it contains data records or is improperly formatted, this error will occur.
  Corrupted IDoc: The IDoc might be corrupted or not properly generated, leading to an invalid structure.
  Transmission Issues: There may have been issues during the transmission of the IDoc, causing it to be incomplete or malformed.
  Incorrect Mapping: If the IDoc is being generated from an external system, there may be a mapping issue where the control record is not being created correctly.
  
  Solution:
  
  Check the IDoc File: Open the IDoc file and verify that the first record is indeed a control record. The control record should start with the segment type "EDI_DC40" (or similar, depending on the IDoc type).
  Validate IDoc Structure: Ensure that the IDoc structure is correct and that all required segments are present. You can use transaction WE19 (Test tool for IDocs) to simulate the IDoc processing and check for errors.
  Regenerate IDoc: If the IDoc is corrupted, regenerate it from the source system or application. Ensure that the generation process adheres to the correct IDoc format.
  Review Transmission Process: If the IDoc is being sent from an external system, review the transmission process to ensure that it is correctly sending the IDoc in the expected format.
  Check for Custom Code: If there is any custom code involved in the IDoc processing, review it to ensure that it is not altering the IDoc structure incorrectly.
  
  Related Information:
  
  IDoc Control Record: The control record contains metadata about the IDoc, such as the IDoc type, message type, sender, receiver, and other important information.
  IDoc Segments: IDocs consist of multiple segments, including the control record, data records, and status records. Each segment has a specific structure and purpose.
  Transaction Codes:
  
  WE02: Display IDocs
  WE19: Test IDocs
  WE20: Partner Profiles
  WE21: Port Definition
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to IDoc processing that might address this error.
  
  By following these steps, you should be able to identify the cause of the E0744 error and implement a solution to resolve it.