Java Stack and ABAP Stack

Hi Experts,
i am now confused about these two stacks: Java Stack and ABAP Stack.
for IR objects, like DT, MT, SI, MM, SM, Action, Process Integration Scenario
for ID objects, like profile agreements, receiver determination, interface determination,
1. where are these objects stored in? Java or ABAP stack?
and i know Adapter Engine is run on JAVA Stack while Integration Engine is on ABAP Stack.
2. how do they call the objects stored in different stack during processing?

Hi,
1. where are these objects stored in? Java or ABAP stack?
These objects are basically developed on the JAVA stack, when they are activated their runtime version is created on ABAP stack, which you can check in SXI_CACHE transaction.
2. how do they call the objects stored in different stack during processing?
Runtime versions of these objects are responsible for the execution of the interfaces.
-Supriya.

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