How To Fix 2Q001 - System &1 on host &2 already known

2Q001 - Overview

• Message type: E = Error

• Message class: 2Q - TMS Service Message Class

• Message number: 001

• Message text: System &1 on host &2 already known

What causes this issue?

You tried to request a domain link for the system &V1& on the host &V2&
with service number &V3&. However, this system is already known.

System Response

The request for a domain link is not created.

How to fix this error?

Correct your entry or delete system &V1& from the current domain.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

2Q001 - Details

• The SAP error message 2Q001 indicates that a system with the specified name is already known on the host. This typically occurs in scenarios involving system configuration, such as when setting up a new SAP system or during system replication.
  
  Cause:
  The error is usually caused by one of the following:
  
  Duplicate System Name: The system name you are trying to register or configure is already in use on the specified host.
  Incorrect Configuration: There may be a misconfiguration in the system landscape or in the SAP instance settings.
  Previous Installation: An earlier installation or configuration of the same system name may not have been completely removed.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Existing Systems:
  
  Use transaction SMLG or SMLT to check the list of existing systems and their configurations. Ensure that the system name you are trying to register is not already listed.
  
  
  
  Rename or Remove Duplicate:
  
  If the system name is indeed in