How To Fix CMS034 - Error in RFC communication - &

CMS034 - Overview

• Message type: E = Error

• Message class: CMS - KPro: Content Management Service

• Message number: 034

• Message text: Error in RFC communication - &

What causes this issue?

A problem occurred while establishing the connection or in
communication.
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System Response

The function cannot be executed.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CMS034 - Error in RFC communication - & ?

  The SAP error message CMS034, which indicates "Error in RFC communication," typically arises when there is a problem with the Remote Function Call (RFC) communication between SAP systems or between an SAP system and an external system. This error can occur due to various reasons, and understanding the cause is essential for troubleshooting.
  Causes of CMS034 Error
  
  
  Network Issues: Problems with the network connection can lead to communication failures. This could be due to firewalls, network outages, or incorrect network configurations.
  
  
  RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system. This includes incorrect settings for the target system, such as the system ID, client number, user credentials, or connection type.
  
  
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to perform the requested operation.
  
  
  System Availability: The target SAP system may be down or not reachable, leading to communication errors.
  
  
  Version Compatibility: Incompatibility