How To Fix MCEX004 - Communication structure &1 is used in extraction structure &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MCEX - Extraction Interface LIS/BW

• Message number: 004

• Message text: Communication structure &1 is used in extraction structure &2

What causes this issue?

Individual fields in the communication structure are already contained
in the extract structure. You cannot therefore not delete the
communication structure from the selection.

How to fix this error?

If you want to delete the communication structure, go into the
structure maintenance of the relevant extract structure.

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 MCEX004 - Communication structure &1 is used in extraction structure &2 ?

  The SAP error message MCEX004 indicates that there is a conflict in the extraction structures being used in the data extraction process. Specifically, it means that a communication structure (denoted as &1) is being used in an extraction structure (denoted as &2), which is not allowed in the context of the operation you are trying to perform.
  Cause:
  
  Incorrect Configuration: The communication structure is likely being referenced incorrectly in the extraction structure.
  Data Model Issues: There may be inconsistencies in the data model or the way the extraction structures are defined.
  Version Mismatch: If there are different versions of the extraction structures or communication structures, this could lead to conflicts.
  Custom Modifications: If there have been custom modifications to the standard extraction structures or communication structures, this could lead to unexpected behavior.
  
  Solution:
  
  Check Configuration: Review the configuration of the extraction structure and the communication structure. Ensure that they are set up correctly and that the communication structure is not being used inappropriately.
  Review Data Model: Examine the data model to ensure that the extraction structure is correctly defined and that it does not reference the communication structure in a way that violates SAP's rules.
  Update Structures: If necessary, update the extraction structure to remove the reference to the communication structure or adjust the communication structure to ensure compatibility.
  Consult Documentation: Refer to SAP documentation for the specific extraction structure and communication structure to understand their intended use and any restrictions.
  Check for Notes: Look for any SAP Notes related to this error message, as there may be patches or updates that address known issues.
  Testing: After making changes, test the extraction process to ensure that the error is resolved.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may provide additional insights or solutions for this specific error.
  Transaction Codes: Use transaction codes like RSA1 (Data Warehousing Workbench) to analyze and manage data extraction structures.
  Documentation: Review the SAP Help Portal for detailed information on data extraction and the specific structures involved.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  If the issue persists after following these steps, it may be beneficial to consult with an SAP expert or reach out to SAP support for further assistance.