How To Fix OPP_CORE004 - Error code &2 when connecting to RFC destination &1

OPP_CORE004 - Overview

• Message type: E = Error

• Message class: OPP_CORE - Messages for OPP core functionality

• Message number: 004

• Message text: Error code &2 when connecting to RFC destination &1

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 OPP_CORE004 - Error code &2 when connecting to RFC destination &1 ?

  The SAP error message OPP_CORE004 with error code &2 when connecting to RFC destination &1 typically indicates an issue with the connection to the specified RFC destination. This error can arise due to various reasons, including configuration issues, network problems, or authorization issues. Here’s a breakdown of the potential causes, solutions, and related information:
  Causes:
  
  Incorrect RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system.
  Network Issues: There may be network connectivity problems between the SAP systems.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured.
  Firewall Restrictions: Firewalls may be blocking the connection to the RFC destination.
  System Availability: The target system may be down or not reachable.
  
  Solutions:
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 and verify the settings for the RFC destination &1.
  Ensure that the connection type is