How To Fix OL812 - RFC communications error: & & & &

OL812 - Overview

• Message type: E = Error

• Message class: OL - Workflow object types: Run-time system

• Message number: 812

• Message text: RFC communications error: & & & &

What causes this issue?

Connection problems experienced when a function module was called in
another system.

How to fix this error?

Try again later.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OL812 - RFC communications error: & & & & ?

  The SAP error message OL812, which indicates an RFC (Remote Function Call) communications error, can arise from various issues related to network connectivity, configuration, or system settings. Here’s a breakdown of potential causes, solutions, and related information:
  Causes:
  
  Network Issues: Problems with the network connection between the SAP systems can lead to RFC errors. This could be due to firewalls, routing issues, or network outages.
  Configuration Errors: Incorrect settings in the RFC destination configuration (transaction SM59) can cause communication failures.
  System Availability: The target SAP system may be down or not reachable due to maintenance or other issues.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  SAP Kernel Issues: Incompatibilities or bugs in the SAP kernel version can also lead to RFC errors.
  Timeout Settings: If the timeout settings for the RFC connection are too low, it may lead to premature termination of the connection.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like