How To Fix E0736 - IDoc transfer: Error while connection to R/2 System was being closed

E0736 - Overview

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 736

• Message text: IDoc transfer: Error while connection to R/2 System was being closed

What causes this issue?

The SAP system could not execute a CPI-C connection to the R/2 system.
The following command could not be executed correctly:
&v1&.
The symbolic destination is: &v2&

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?

Ensure that the CPI-C communication to the symbolic destination &v2& R/2
system is working.
Maintain the corresponding CPI-C tables, e.g. table TXCOM.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E0736 - IDoc transfer: Error while connection to R/2 System was being closed ?

  The SAP error message E0736, which indicates an issue with IDoc transfer due to a connection problem with the R/2 system, can arise from various causes. Here’s a breakdown of potential causes, solutions, and related information:
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the R/2 system, leading to a dropped connection.
  Configuration Errors: Incorrect configuration settings in the RFC (Remote Function Call) destination for the R/2 system can lead to connection issues.
  Timeout Settings: The connection may be timing out due to inactivity or long processing times.
  R/2 System Availability: The R/2 system may be down or not reachable at the time of the IDoc transfer.
  Resource Limitations: The R/2 system may be experiencing resource limitations (e.g., memory, CPU) that prevent it from processing the IDoc.
  Version Compatibility: There may be compatibility issues between the SAP system and the R/2 system, especially if they are running different versions.
  
  Solutions:
  
  Check Network Connectivity: