How To Fix SL404 - Error occurred when determining the active instances

SL404 - Overview

• Message type: E = Error

• Message class: SL - System log

• Message number: 404

• Message text: Error occurred when determining the active instances

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?

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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.

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 SL404 - Error occurred when determining the active instances ?

  The SAP error message SL404, which states "Error occurred when determining the active instances," typically occurs in the context of SAP Landscape Management (LaMa) or when working with SAP systems that involve multiple instances, such as in a distributed environment. This error can arise due to various reasons, including configuration issues, network problems, or issues with the SAP system itself.
  Causes of SL404 Error
  
  Network Issues: There may be connectivity problems between the SAP system and the database or application servers.
  Configuration Errors: Incorrect configuration settings in the SAP system or in the landscape management tool can lead to this error.
  Instance Availability: The instances you are trying to access may not be running or may be in a state that prevents them from being recognized as active.
  Authorization Issues: The user may not have the necessary permissions to access the instances.
  System Load: High load on the system can sometimes lead to timeouts or failures