How To Fix OL802 - RFC system error: & & & &

OL802 - Overview

• Message type: E = Error

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

• Message number: 802

• Message text: RFC system error: & & & &

What causes this issue?

A system error occurred when a function module was called in another
system.

How to fix this error?

Please inform your system administrator.

Error message extract from SAP system. Copyright SAP SE.

OL802 - Details

• The SAP error message OL802, which indicates an RFC (Remote Function Call) system error, can be caused by various issues related to the communication between SAP systems or between an SAP system and an external system. The error message typically includes placeholders (represented by "& & & &") that may provide additional context or specific details about the error.
  Possible Causes:
  
  
  Network Issues: Problems with the network connection between the SAP systems can lead to RFC errors. This could include issues like firewalls blocking traffic, network outages, or misconfigured network settings.
  
  
  Configuration Errors: Incorrect configuration of RFC destinations in the SAP system can cause communication failures. This includes incorrect settings in transaction SM59.
  
  
  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 system may be down or not reachable, leading to an inability to establish an RFC connection.
  
  
  Resource Limitations: