How To Fix NET013 - Domain Name Service (DNS)

SAP Error Message - Details

• Message type: E = Error

• Message class: NET - Network Messages

• Message number: 013

• Message text: Domain Name Service (DNS)

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message NET013 - Domain Name Service (DNS) ?

  The SAP error message NET013 typically relates to issues with Domain Name Service (DNS) resolution. This error can occur when the SAP system is unable to resolve hostnames to IP addresses, which is essential for network communication.
  Cause:
  
  DNS Configuration Issues: The DNS server may not be configured correctly, or the hostname being queried may not exist in the DNS records.
  Network Connectivity Problems: There may be network issues preventing the SAP system from reaching the DNS server.
  Incorrect Hostname: The hostname specified in the SAP configuration may be incorrect or misspelled.
  Firewall Restrictions: Firewalls may be blocking DNS queries or responses.
  Local Host File Issues: If the system relies on local host files (like /etc/hosts on Unix/Linux or C:\Windows\System32\drivers\etc\hosts on Windows), there may be incorrect entries.
  
  Solution:
  
  
  Check DNS Configuration:
  
  Verify that the DNS server settings in the SAP system are correct.
  Ensure that the DNS server is reachable from the SAP server.
  
  
  
  Test DNS Resolution:
  
  Use command-line tools like nslookup or dig to test if the hostname can be resolved correctly.
  Example: nslookup <hostname> or dig <hostname>.
  
  
  
  Verify Hostname:
  
  Double-check the hostname used in the SAP configuration for any typos or errors.
  
  
  
  Check Network Connectivity:
  
  Ensure that the SAP server has network access to the DNS server.
  Use ping to check connectivity to the DNS server.
  
  
  
  Review Firewall Settings:
  
  Check if any firewalls are blocking DNS traffic (UDP port 53).
  
  
  
  Update Local Host File:
  
  If necessary, add the hostname and corresponding IP address to the local host file for quick resolution.
  
  
  
  Restart Services:
  
  After making changes, restart the SAP services or the entire server to ensure that the changes take effect.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to network issues and DNS errors for specific guidance and troubleshooting steps.
  Logs: Review the SAP system logs (transaction SM21) for additional error messages that may provide more context.
  Network Configuration: Consult with your network administrator to ensure that the DNS infrastructure is functioning correctly.
  
  If the problem persists after following these steps, it may be beneficial to engage SAP support or your IT department for further assistance.