How To Fix SBLM012 - &1 servers not reached

SAP Error Message - Details

• Message type: E = Error

• Message class: SBLM - Blacklist Monitor: Message Classes

• Message number: 012

• Message text: &1 servers not reached

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 SBLM012 - &1 servers not reached ?

  The SAP error message SBLM012 indicates that the system is unable to reach one or more servers that are required for a specific operation. This error typically occurs in the context of SAP Business Workflow or when using SAP Business Application Programming Interfaces (BAPIs) that rely on communication with external systems or services.
  Causes:
  
  Network Issues: There may be network connectivity problems preventing the SAP system from reaching the specified servers.
  Server Down: The target server(s) may be down or not responding due to maintenance or unexpected outages.
  Configuration Issues: Incorrect configuration settings in the SAP system or in the external systems can lead to communication failures.
  Firewall Restrictions: Firewalls or security settings may be blocking the communication between the SAP system and the target servers.
  DNS Resolution Issues: The SAP system may not be able to resolve the hostname of the target server due to DNS issues.
  
  Solutions:
  
  Check Network Connectivity: Verify that the network connection between the SAP system and the target servers is active. You can use tools like ping or traceroute to test connectivity.
  Server Status: Check the status of the target servers to ensure they are up and running. If they are down, coordinate with the relevant teams to bring them back online.
  Review Configuration: Ensure that the configuration settings in the SAP system (such as RFC destinations, logical systems, etc.) are correct and match the settings in the external systems.
  Firewall Settings: Review firewall rules and security settings to ensure that they allow traffic between the SAP system and the target servers.
  DNS Configuration: Check the DNS settings to ensure that the SAP system can resolve the hostnames of the target servers correctly. You may need to update the hosts file or DNS records if there are issues.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SM21 (System Log) or ST22 (Dump Analysis) to check for any related errors or dumps that could provide more context.
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including any logs or screenshots.
  
  By following these steps, you should be able to diagnose and resolve the SBLM012 error effectively.