How To Fix M2775 - The IDoc entry description already exists!

M2775 - Overview

• Message type: E = Error

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

• Message number: 775

• Message text: The IDoc entry description already exists!

What causes this issue?

Connection of the logical system to the LIS inbound interface is
globally valid, i.e. if a logical system has been defined for one
LIS IDoc "External data", this is automatically valid for all other
LIS "External data" IDocs.

System Response

It is not necessary to save the logical system.

How to fix this error?

You can display all of the logical systems that are already defined
via: <LS> Utilities -> IDoc sender systems</>.

Error message extract from SAP system. Copyright SAP SE.

M2775 - Details

• The SAP error message M2775, "The IDoc entry description already exists," typically occurs when there is an attempt to create or process an IDoc (Intermediate Document) that has a duplicate entry in the IDoc control record. This can happen in various scenarios, such as when trying to send or receive IDocs that have already been processed or when there are issues with the IDoc configuration.
  Causes:
  
  Duplicate IDoc Control Records: The IDoc control record for the IDoc you are trying to process already exists in the database.
  IDoc Processing Issues: The IDoc may have been processed previously, and the system is trying to reprocess it without proper handling.
  Configuration Errors: There may be issues with the configuration of the IDoc types or message types that lead to conflicts.
  Data Consistency Issues: Inconsistent data or errors in the data being sent can lead to duplicate entries.
  
  Solutions:
  
  Check for Existing IDocs: Use transaction code WE02 or WE05 to