How To Fix SY443 - The specified instance is not active

SY443 - Overview

• Message type: E = Error

• Message class: SY - ABAP/4 system messages

• Message number: 443

• Message text: The specified instance is not active

What causes this issue?

The object display in the debugger contains an object reference.
However, the garbage collector has recognized the object as garbage and
"collected" it. This means that the object reference is no longer
valid.
Background Information:
ABAP Objects has its own automatic memory management for objects. When
an object is no longer accessible using any object- or interface
references, the memory management ("garbage collector") releases the
memory space that the object had been occupying. This space can then be
reused by a later CREATE OBJECT statement.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Enter a valid object index. All object references shown in the Debugger
are valid. It is better to navigate to the object display by
double-clicking on the reference value than to enter the object index
directly.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SY443 - The specified instance is not active ?

  The SAP error message SY443, which states "The specified instance is not active," typically occurs in the context of SAP systems when there is an attempt to access or interact with an instance (such as a database instance or application server) that is not currently active or running. This can happen in various scenarios, such as when trying to connect to a database, execute a transaction, or perform a system operation.
  Causes of SY443 Error
  
  
  Inactive Instance: The most common cause is that the instance you are trying to access is not currently active. This could be due to the instance being stopped, crashed, or not started properly.
  
  
  
  Configuration Issues: There may be configuration issues in the SAP system that prevent the instance from being recognized as active.
  
  
  Network Issues: If the instance is on a different server, network connectivity issues could prevent access to the instance.
  
  
  System Maintenance: The instance may be undergoing maintenance