How identification Engine (IRE) works in Robust Transform Map (RTE) in SCCM integration SAM?

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SCCM plugin version: 3.3.0 

Question 1 :

(i)   We used to integrate the on-premises SCCM database to ServiceNow instance. 

(ii)  The connection, import Data source, and test loading within ServiceNow have all been successfully completed. 

(iii) Subsequently, execute the Robust Transform Map (RTE) to insert the incoming data into the Configuration Management Database (CMDB). 

 
I'm unsure about how the Identification and Reconciliation Engine (IRE) is triggered when a robust transform map is clicked. 

Where can I find the Identification and Reconciliation Engine (IRE) within the Robust Transform Map? 

Question 2 :

According to the documentation, certain scriptable APIs are available. Refer this https://docs.servicenow.com/bundle/vancouver-api-reference/page/app-store/dev_portal/API_reference/I...

Therefore, this scriptable API within my instance is designed to trigger the Identification and Reconciliation Engine (IRE). In this scenario, the Robust Transform Map utilizes the createOrUpdateCI() API function when importing data into the CMDB. 

Could you please provide further clarification on scriptable API in IRE?

Question 3 :

(i)  I'm attempting to find the Identification and Reconciliation Engine (IRE) using the assistance of RTE Definitions, but I couldn’t find the IRE. 

(ii) Could you please explain how the Robust Transform Map (RTE) triggers the Identification and Reconciliation Engine (IRE) in ServiceNow? Alternatively, do any business rules invoke the IRE when a Robust Transform Map (RTE) is executed? 

 
I would greatly appreciate your assistance in addressing these matters. I'm seeking answers and guidance on these issues. 

Here I'm included screenshot for more clarification!

Thanks