How To Fix NET003 - Host network interface card

SAP Error Message - Details

• Message type: E = Error

• Message class: NET - Network Messages

• Message number: 003

• Message text: Host network interface card

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message NET003 - Host network interface card ?

  The SAP error message NET003 typically indicates an issue related to the network interface card (NIC) on the host machine where the SAP system is running. This error can arise due to various reasons, including network configuration issues, hardware problems, or incorrect settings in the SAP system.
  Causes of NET003 Error
  
  Network Configuration Issues: Incorrect IP address, subnet mask, or gateway settings can lead to connectivity problems.
  Hardware Problems: Faulty network interface cards or issues with the physical network connection (e.g., cables, switches) can cause this error.
  Firewall or Security Settings: Firewalls or security settings may block the necessary ports for SAP communication.
  SAP Profile Settings: Incorrect settings in the SAP instance profile (e.g., instance profile or default profile) can lead to network issues.
  DNS Resolution Issues: Problems with DNS settings can prevent the SAP system from resolving hostnames correctly.
  
  Solutions to NET003 Error
  
  
  Check Network Configuration:
  
  Verify the IP address, subnet mask, and gateway settings on the host machine.
  Ensure that the network settings are correctly configured in the SAP instance profile.
  
  
  
  Test Network Connectivity:
  
  Use tools like ping to check connectivity to other machines and the SAP server.
  Check if the network interface is up and running using commands like ifconfig (Linux) or ipconfig (Windows).
  
  
  
  Inspect Hardware:
  
  Check the physical connections of the network interface card.
  If possible, test the NIC on another machine or replace it to rule out hardware failure.
  
  
  
  Review Firewall Settings:
  
  Ensure that the necessary ports for SAP communication (e.g., 3200 for SAP GUI) are open in the firewall settings.
  Temporarily disable the firewall to see if it resolves the issue.
  
  
  
  Check DNS Settings:
  
  Verify that the DNS settings are correct and that the hostname can be resolved.
  Use nslookup or dig to check DNS resolution.
  
  
  
  Review SAP Profile Settings:
  
  Check the instance profile for any incorrect parameters related to network settings.
  Ensure that the SAPHOSTAGENT and other relevant parameters are correctly set.
  
  
  
  Consult SAP Notes:
  
  Look for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Related Information
  
  SAP Documentation: Refer to the official SAP documentation for network configuration and troubleshooting.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  System Logs: Check the SAP system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your network administrator or SAP support for further assistance.