How To Fix ICL_MAIN_OUT002 - Communication error in RFC call of &1; destination: &2, error: &3

ICL_MAIN_OUT002 - Overview

• Message type: E = Error

• Message class: ICL_MAIN_OUT - Jointly Used Messages of Outbound Interface

• Message number: 002

• Message text: Communication error in RFC call of &1; destination: &2, error: &3

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 ICL_MAIN_OUT002 - Communication error in RFC call of &1; destination: &2, error: &3 ?

  The SAP error message ICL_MAIN_OUT002 indicates a communication error during an RFC (Remote Function Call) operation. This error typically occurs when there is a problem with the connection to the specified destination in the SAP system. Here’s a breakdown of the components of the error message:
  
  &1: The name of the function module or program that is trying to make the RFC call.
  &2: The destination (RFC destination) that the system is trying to connect to.
  &3: The specific error message or code that provides more details about the communication issue.
  
  Causes
  
  Network Issues: There may be network connectivity problems between the SAP systems involved in the RFC call.
  Incorrect RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system (transaction SM59).
  Authorization Issues: The user credentials used for the RFC call may not have the necessary authorizations.
  System Availability: The target system may be down or not reachable.
  Firewall or Security Settings: Firewalls