How To Fix T2556 - RFC link & interrupted, no RFC back-up link available

T2556 - Overview

• Message type: E = Error

• Message class: T2 - General Treasury

• Message number: 556

• Message text: RFC link & interrupted, no RFC back-up link available

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message T2556 - RFC link & interrupted, no RFC back-up link available ?

  The SAP error message T2556, which states "RFC link & interrupted, no RFC back-up link available," typically indicates an issue with the Remote Function Call (RFC) connection between SAP systems. This error can occur due to various reasons, including network issues, configuration problems, or system resource limitations.
  Causes:
  
  Network Issues: Problems with the network connection between the SAP systems can lead to interruptions in the RFC link.
  Configuration Errors: Incorrect settings in the RFC destination configuration can cause the link to fail.
  System Resource Limitations: If the SAP system is under heavy load or if there are insufficient resources (like memory or CPU), it may not be able to maintain the RFC connection.
  Timeout Settings: If the timeout settings for the RFC connection are too low, it may lead to premature disconnections.
  Firewall or Security Settings: Firewalls or security settings may block the RFC communication between systems.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is stable network connectivity