Where does Source Subinventory get picked up from?

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Hello Experts,

After "Release and Pick Materials", I generated Movement Request Pick slip report, and the values are as follows:

The value in Source Subinventory is 130 (highlighted in Yellow). However, I am not able to understand what the configuration is from where this value is getting picked.

I changed the Default Supply Subinventory at Plant Parameter level to some different value, changed the Supply Subinventory at item level to some different value, At the Work Definition Level, I changed the Supply subinventory to some different value for the component items...However, the Source Subinventory is still showing 130 in the Pick slip report.