How To Fix CTS_CONFIG_MSG_CL161 - System &1 is of type '&2' and 'Extended Transport Control' is active

CTS_CONFIG_MSG_CL161 - Overview

• Message type: E = Error

• Message class: CTS_CONFIG_MSG_CL - Message Class for Central CTS Configuration

• Message number: 161

• Message text: System &1 is of type '&2' and 'Extended Transport Control' is active

What causes this issue?

You want to add a non-ABAP system where 'Extended Transport Control' is
active to a target cluster.

System Response

This scenario is not supported.

How to fix this error?

If you do not need the system in the cluster, delete it from the
cluster.
If you need the system in the cluster, deactivate 'Extended Transport
Control' for system &v1&. To do this, proceed as follows:
1. Call transaction STMS in the communication system of system &v1&.
2. Choose "System Overview".
3. Select the required system by double-clicking on it.
4. On the "Transport Tool" tab page, switch to change mode.
5. As required, set the value of the TMS parameter "CTC" to "0" or
delete it.
6. Confirm the settings and distribute the TMS configuration.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CTS_CONFIG_MSG_CL161 - System &1 is of type '&2' and 'Extended Transport Control' is active ?

  The SAP error message CTS_CONFIG_MSG_CL161 indicates that there is a configuration issue related to the Change and Transport System (CTS) in your SAP environment. Specifically, it states that the system is of a certain type (indicated by &2) and that the 'Extended Transport Control' is active. This typically occurs when there is a mismatch in the transport configuration settings.
  
  Cause:
  
  System Type Mismatch: The system type (e.g., Development, Quality Assurance, Production) may not be compatible with the settings for Extended Transport Control.
  
  Configuration Issues: The transport routes or the transport layer may not be correctly configured for the system type.
  Transport Layer Settings: The transport layer settings may not be aligned with the requirements of the Extended Transport Control.
  
  
  Solution:
  
  Check System Type: Verify the system type in the SAP system settings. Ensure that it is correctly defined as Development, Quality Assurance, or Production.
  Review Transport Configuration:
  Go to transaction STMS (Transport Management System).
  Check the transport routes and