How To Fix E0749 - IDoc can be ignored - error during transfer from R/2 System

E0749 - Overview

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 749

• Message text: IDoc can be ignored - error during transfer from R/2 System

What causes this issue?

The IDoc was sent from an R/2 system. An error occurred during data
transfer. The R/2 system will send the IDoc again or has already sent
the IDoc again. This IDoc will therefore be assigned the status
'Ignore' and will not be processed further. Due to the status, the IDoc
can be reorganized.

System Response

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

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

E0749 - Details

• The SAP error message E0749, which states "IDoc can be ignored - error during transfer from R/2 System," typically occurs when there is an issue with the transfer of IDocs (Intermediate Documents) from an R/2 system to an R/3 system (or S/4HANA). This error indicates that the IDoc cannot be processed due to a problem encountered during the transfer process.
  Causes:
  
  Connection Issues: There may be network connectivity problems between the R/2 and R/3 systems.
  Configuration Errors: Incorrect configuration settings in the RFC (Remote Function Call) destination or in the IDoc processing settings.
  Data Format Issues: The data being sent from the R/2 system may not conform to the expected format or structure required by the R/3 system.
  IDoc Type or Message Type Issues: The IDoc type or message type may not be recognized or may not exist in the R/3 system.
  Authorization Issues: The user or system may not have the necessary authorizations to process