How To Fix L6027 - The first record of a communication document is not marked with F or S

L6027 - Overview

• Message type: E = Error

• Message class: L6 - LVS Link R/2 - ECC

• Message number: 027

• Message text: The first record of a communication document is not marked with F or S

Self-Explanatory Message

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L6027 - Details

• The SAP error message L6027, "The first record of a communication document is not marked with F or S," typically occurs in the context of logistics and communication documents, particularly when dealing with inbound or outbound deliveries, or when processing communication documents in the SAP system.
  
  Cause:
  This error usually indicates that the first record of a communication document (such as an IDoc or a similar document) is not properly marked with the expected identifiers. In SAP, communication documents often have specific markers to indicate their status or type:
  
  F: Indicates a "Function" or a specific type of processing.
  S: Indicates a "Status" or another type of processing.
  
  If the first record does not have either of these markers, the system cannot process the document correctly, leading to this error.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Document Structure: Review the structure of the communication document to ensure that the first record