How To Fix CNV_10100101 - RFC connection error: &1 return code (SY-SUBRC) = &2

CNV_10100101 - Overview

• Message type: E = Error

• Message class: CNV_10100 - Messages from package 10100

• Message number: 101

• Message text: RFC connection error: &1 return code (SY-SUBRC) = &2

What causes this issue?

A remote function call returned an error.

System Response

The return code of the system is &V2&.
The description of the error is &V1&.

How to fix this error?

Resolve the error, and execute the activity again.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

CNV_10100101 - Details

• The SAP error message CNV_10100101 RFC connection error: &1 return code (SY-SUBRC) = &2 typically indicates an issue with the Remote Function Call (RFC) connection in the SAP system. This error is often encountered during data migration or conversion processes, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP systems involved in the RFC call.
  Configuration Errors: The RFC destination may not be configured correctly in transaction SM59.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  System Availability: The target system may be down or not reachable.
  Incorrect Parameters: The parameters passed in the RFC call may be incorrect or not matching the expected format.
  Firewall Restrictions: Firewalls or security settings may be blocking the RFC communication.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the systems is stable and that there are