How To Fix M2799 - Error while checking communication structure and segment definition

SAP Error Message - Details

• Message type: E = Error

• Message class: M2 - LIS: Generating and updating info structures

• Message number: 799

• Message text: Error while checking communication structure and segment definition

What causes this issue?

Errors occurred while checking the communication structure &V1& and the
segment definition of segment type &V2& for the IDoc enhancement &V3&.

System Response

The LIS inbound interface cannot be created.

How to fix this error?

More detailed information can be found in the log.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M2799 - Error while checking communication structure and segment definition ?

  The SAP error message M2799, which states "Error while checking communication structure and segment definition," typically occurs in the context of IDoc processing or when working with EDI (Electronic Data Interchange) in SAP. This error indicates that there is an issue with the configuration of the communication structure or the segment definitions used in the IDoc.
  Causes:
  
  
  Incorrect Segment Definition: The segment definitions in the IDoc type may not match the expected structure. This can happen if there are changes in the IDoc structure that have not been properly updated in the configuration.
  
  
  Missing or Incorrect Communication Structure: The communication structure that is supposed to be used for the IDoc may be missing or incorrectly defined.
  
  
  Version Mismatch: There may be a version mismatch between the IDoc type and the segment definitions, especially if there have been recent updates or changes.
  
  
  Configuration Issues: Issues in the configuration of the IDoc processing, such as incorrect settings in the partner profiles or message types.
  
  
  Data Issues: The data being processed may not conform to the expected format or structure, leading to validation errors.
  
  
  Solutions:
  
  
  Check Segment Definitions: Verify that the segment definitions for the IDoc type are correctly defined and match the expected structure. You can do this by using transaction WE30 (IDoc Type) to review the IDoc type and its segments.
  
  
  Review Communication Structures: Ensure that the communication structures are correctly defined and that they correspond to the IDoc type being used. You can check this in transaction WE57 (Assign IDoc Types to Message Types).
  
  
  Update Configuration: If there have been recent changes to the IDoc structure, ensure that all related configurations are updated accordingly. This includes checking partner profiles in transaction WE20.
  
  
  Test with Sample Data: If possible, test the IDoc processing with sample data that is known to be valid. This can help isolate whether the issue is with the data being sent or with the configuration.
  
  
  Check for Notes and Patches: Sometimes, SAP releases notes or patches that address specific issues related to IDoc processing. Check the SAP Support Portal for any relevant notes that may apply to your version of SAP.
  
  
  Debugging: If the issue persists, consider debugging the IDoc processing to identify the exact point of failure. This may require technical expertise in ABAP.
  
  
  Related Information:
  
  
  Transaction Codes:
  
  WE30: IDoc Type Maintenance
  WE20: Partner Profiles
  WE57: Assign IDoc Types to Message Types
  WE60: IDoc Documentation
  
  
  
  SAP Notes: Search the SAP Support Portal for notes related to IDoc processing and error M2799. 
  
  
  Documentation: Review SAP documentation on IDoc processing and EDI to ensure that all configurations are correctly set up.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the M2799 error in your SAP system.