How To Fix NET002 - Host name

SAP Error Message - Details

• Message type: E = Error

• Message class: NET - Network Messages

• Message number: 002

• Message text: Host name

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 NET002 - Host name ?

  The SAP error message NET002 typically indicates a problem related to the hostname resolution in the SAP system. This error can occur when the SAP system is unable to resolve the hostname of the application server or the database server. Here are the common causes, solutions, and related information for this error:
  Causes:
  
  Incorrect Hostname Configuration: The hostname specified in the SAP system configuration may be incorrect or misspelled.
  DNS Issues: The Domain Name System (DNS) may not be able to resolve the hostname to an IP address.
  Network Configuration: There may be network issues preventing the SAP system from reaching the specified hostname.
  Hosts File Misconfiguration: The /etc/hosts file (on Unix/Linux) or C:\Windows\System32\drivers\etc\hosts file (on Windows) may not contain the correct mappings for the hostname.
  Firewall or Security Settings: Firewalls or security settings may be blocking access to the hostname.
  
  Solutions:
  
  Verify Hostname: Check the hostname in the SAP configuration (e.g., in the instance profile) and ensure it is correct.
  Check DNS Resolution: Use commands like nslookup or ping to verify that the hostname can be resolved to an IP address. If it cannot, check your DNS settings.
  Update Hosts File: If DNS is not configured or not working, you can add the hostname and its corresponding IP address to the hosts file on the server.
  Network Connectivity: Ensure that there are no network issues preventing the SAP system from accessing the hostname. Check network cables, switches, and routers.
  Firewall Settings: Review firewall settings to ensure that they are not blocking access to the hostname.
  SAP Profile Parameters: Check the SAP profile parameters related to network settings (e.g., rdisp/mshost, rdisp/msserv, etc.) to ensure they are correctly configured.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the NET002 error for any specific patches or updates that may address the issue.
  SAP Community: The SAP Community forums can be a valuable resource for troubleshooting and finding solutions shared by other users who have encountered similar issues.
  Logs: Review the SAP system logs (e.g., dev_w0, dev_rfc) for additional error messages or context that may help diagnose the problem.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your network administrator or SAP support for further assistance.