ITSM: How to block unwanted Transaction Type

if you are getting below screen in ITSM while clicking on Create Incident / Service Request & you want to block unwanted transaction type (SMIN).

ZMIN

ZMIN

You can go To SPRO – SAP Solution Manager – Capabilities – IT Service Management – Transactions – Define Transaction Type

Find the SMIN & make it inactive. while saving it will ask you TR number, you can also forward the same to further systems.

smin