How To Fix MDG_REF_DATA006 - Communication failure while connecting to system with RFC connection &1

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_REF_DATA - Message Class for Reference Data messages

• Message number: 006

• Message text: Communication failure while connecting to system with RFC connection &1

What causes this issue?

Communication failure while connecting to target system using the RFC
connection &V1&.

System Response

The replication failed because of errors encountered while connecting to
the target system.

How to fix this error?

Check if the user ID exists in the target system for the logged on user
&V2&. This is a prerequisite.

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

INCLUDE CONFIG_DATA_PREREQUISITES OBJECT DOKU ID TX
You can also contact your system administrator.

Procedure for System Administrators

Check if the RFC connection &V1& is maintained correctly between the
source and target systems.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MDG_REF_DATA006 - Communication failure while connecting to system with RFC connection &1 ?

  The SAP error message MDG_REF_DATA006 indicates a communication failure while trying to connect to a system using an RFC (Remote Function Call) connection. This error can occur in various scenarios, particularly in Master Data Governance (MDG) contexts, where data needs to be synchronized or accessed from different systems.
  Causes:
  
  Network Issues: There may be network connectivity problems between the systems involved.
  RFC Configuration: The RFC destination may not be configured correctly in the SAP system.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  System Availability: The target system may be down or not reachable.
  Firewall Restrictions: Firewalls or security settings may be blocking the connection.
  Incorrect Parameters: The parameters defined in the RFC destination (like the system ID, client, user, password, etc.) may be incorrect.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to verify that the target system is reachable from the source system.
  
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination that is causing the issue. Ensure that the connection type, target host, and system ID are correct.
  Test the connection using the "Test Connection" button in SM59.
  
  
  
  Check User Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations to access the target system.
  
  
  
  Check System Status:
  
  Verify that the target system is up and running. You can check this by logging into the target system directly.
  
  
  
  Review Firewall Settings:
  
  If applicable, check the firewall settings to ensure that the required ports for RFC communication are open.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the developer trace (transaction ST22) for any additional error messages that might provide more context.
  
  
  
  Consult Basis Team:
  
  If the issue persists, it may be necessary to involve your SAP Basis team to investigate further, as they can provide insights into system configurations and network settings.
  
  
  
  Related Information:
  
  RFC Types: Understand the different types of RFC connections (e.g., TCP/IP, HTTP, etc.) and their configurations.
  SAP Notes: Check for any relevant SAP Notes that might address known issues related to RFC connections.
  Documentation: Review SAP documentation on Master Data Governance and RFC connections for best practices and troubleshooting steps.
  
  By following these steps, you should be able to identify and resolve the communication failure indicated by the MDG_REF_DATA006 error message.