How To Fix S1755 - No valid instance name

SAP Error Message - Details

• Message type: E = Error

• Message class: S1 - Statistik / SAP-Monitor

• Message number: 755

• Message text: No valid instance 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.

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message S1755 - No valid instance name ?

  The SAP error message S1755 "No valid instance name" typically occurs in the context of SAP systems when there is an issue with the configuration or availability of an instance that is expected to be present. This error can arise in various scenarios, such as when trying to connect to a database, accessing a service, or during system configuration.
  Causes:
  
  Incorrect Instance Name: The instance name specified in the configuration might be incorrect or misspelled.
  Instance Not Running: The instance you are trying to connect to may not be running or may have crashed.
  Network Issues: There could be network connectivity issues preventing access to the instance.
  Configuration Errors: The configuration files (like tnsnames.ora for Oracle databases) may not be set up correctly.
  Authorization Issues: The user may not have the necessary permissions to access the instance.
  
  Solutions:
  
  Verify Instance Name: Check the instance name in your configuration settings to ensure it is correct.
  Check Instance Status: Use transaction codes like SM51 to check if the instance is running. If it is not, restart the instance.
  Network Connectivity: Ensure that there are no network issues. You can use tools like ping or telnet to check connectivity to the server hosting the instance.
  Review Configuration Files: If applicable, review the configuration files (like tnsnames.ora for Oracle) to ensure that the instance is correctly defined.
  Check User Permissions: Ensure that the user has the necessary permissions to access the instance. You may need to consult with your SAP Basis team or system administrator.
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for more details on instance management and configuration.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Transaction Codes: Familiarize yourself with relevant transaction codes like SM51 (to check instances) and SM37 (to check job logs) for troubleshooting.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or open a support ticket with SAP for further assistance.