I am not able to see custom object type created in Types->ObjectTypes->TestType
When I browse a address space in ignition client only object type visible on ignition gateway but not visible all standard and custom object type so can you help me how I can see in ignition gateway.
There's an advanced setting on each OPC UA connection that lets you change the browse origin from the Objects folder to the Root folder. You would need to change this to Root to be able to browse the ObjectTypes and DataTypes folder of a Server from Ignition.
Is there any reason in particular you need to browse to this type? There's nothing you can do with it in Ignition.