How To Fix M2781 - Communication structure & already exists in INCLUDE &!

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 781

• Message text: Communication structure & already exists in INCLUDE &!

What causes this issue?

You are creating an LIS inbound interface for a new communication
structure.
This communication structure has to be configured to the DATA INCLUDE
for formulas and requirements.
The communication structure, however, already existis in the DATA
INCLUDE.

System Response

Your LIS inbound interface was nevertheless generated.

How to fix this error?

Your system is inconsistent.
Make the necessary checks. It is absolutely <ZH>essential</> that you
correct existing formulas, requirements, information structures and
updating for the communication structure &V2&.
Formulas and requirements that should actually have been deleted can
cause updating to be terminated.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M2781 - Communication structure & already exists in INCLUDE &! ?

  The SAP error message M2781 typically indicates that there is a problem with the communication structure in the context of Material Management (MM) or related modules. This error usually arises when there is an attempt to create or modify a communication structure that already exists in the system, leading to a conflict.
  Cause:
  
  Duplicate Communication Structure: The error occurs when the system detects that the communication structure you are trying to create or modify already exists in the specified INCLUDE.
  Incorrect Configuration: There may be an issue with the configuration settings or the way the communication structures are defined in the system.
  Development or Customization Issues: If you are working in a development environment, it could be due to a custom development that is conflicting with standard SAP structures.
  
  Solution:
  
  Check Existing Structures: Verify if the communication structure you are trying to create already exists. You can do this by checking the relevant transaction codes (like SE11 for Data Dictionary) to see if the structure is already defined.
  Modify Instead of Create: If the structure already exists, consider modifying the existing structure instead of trying to create a new one.
  Review INCLUDE Statements: Check the INCLUDE statements in your code to ensure that they are not causing conflicts. Make sure that the INCLUDE does not already contain the communication structure you are trying to add.
  Consult Documentation: Review SAP documentation or notes related to the specific communication structure you are working with to ensure you are following the correct procedures.
  Transport Requests: If this issue arises in a development environment, ensure that transport requests are correctly managed and that there are no conflicts with other development objects.
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support for assistance, especially if this is a production issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE80 (Object Navigator), and SE37 (Function Module) to investigate the structures and their definitions.
  SAP Notes: Search for SAP Notes related to error M2781 in the SAP Support Portal, as there may be specific notes addressing this issue.
  Development Guidelines: Follow best practices for development in SAP to avoid conflicts with existing structures, especially when creating custom objects.
  
  By following these steps, you should be able to identify the cause of the M2781 error and implement a suitable solution.