How To Fix CNVMBTRFC049 - Determination of host name from the IP number failed

CNVMBTRFC049 - Overview

• Message type: E = Error

• Message class: CNVMBTRFC - Messages used in RFC Management and its objects

• Message number: 049

• Message text: Determination of host name from the IP number failed

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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CNVMBTRFC049 - Details

• The SAP error message CNVMBTRFC049 indicates that the system is unable to resolve a hostname from an IP address. This typically occurs in scenarios involving Remote Function Calls (RFC) where the system needs to establish a connection to another system using its IP address, but cannot determine the corresponding hostname.
  Causes:
  
  DNS 
  Configuration Issues: The Domain Name System (DNS) may not be properly configured, leading to the inability to resolve the IP address to a hostname.
  Hosts File Misconfiguration: The /etc/hosts file (on Unix/Linux systems) or C:\Windows\System32\drivers\etc\hosts file (on Windows systems) may not contain the necessary entries for the IP address.
  Network Issues: There may be network connectivity issues preventing the system from reaching the DNS server.
  Firewall Restrictions: Firewalls may be blocking DNS queries or responses.
  Incorrect IP Address: The IP address being used may be incorrect or not reachable.
  
  Solutions:
  
  
  Check DNS Configuration:
  
  Ensure that the DNS server settings are correctly configured in the SAP system.
  Test DNS