How To Fix J1B_NFE066 - RFC connection &1 failed during sending of request

J1B_NFE066 - Overview

• Message type: E = Error

• Message class: J1B_NFE - Message class for NF-e

• Message number: 066

• Message text: RFC connection &1 failed during sending of request

What causes this issue?

The RFC call to the defined messaging system failed.

System Response

It is not possible to send the request. The system does not perform any
updates for the selected items.

How to fix this error?

Check the defined RFC connection using the <DS:TRAN.SM59>Display and
Maintain RFC Connections</> transaction.

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message J1B_NFE066 - RFC connection &1 failed during sending of request ?

  The SAP error message J1B_NFE066 indicates that there is an issue with the RFC (Remote Function Call) connection when trying to send a request, typically related to the Brazilian Nota Fiscal Eletrônica (NF-e) process. This error can occur due to various reasons, and here are some common causes, solutions, and related information:
  Causes:
  
  RFC Connection Issues: The RFC connection to the external system (like the SEFaz web service) may be down or misconfigured.
  Network Problems: There could be network issues preventing the SAP system from reaching the external service.
  Authorization Issues: The user or system may not have the necessary authorizations to perform the operation.
  Configuration Errors: Incorrect configuration in the SAP system for NF-e processing or the RFC destination.
  Service Availability: The external service (e.g., SEFaz) may be temporarily unavailable or undergoing maintenance.
  
  Solutions:
  
  
  Check RFC Connection:
  
  Go to transaction SM59 in SAP and check the status of the RFC destination used for NF-e.
  Test the connection to ensure