Unable to get the default locator while issuing item in My Maintenance Work UI

Summary:

Hi All,
When we create a work order and make it released , when maintenance technician login and navigate to My Maintenance Work, click on material tab, while performing ad hoc material issue transactions in My Maintenance Work, the supply sub-inventory defaults automatically from predefined setup but locator values does not automatically populates .

Only Subinventory is defaulting , not locator, user manually needs to select the locator from LOV.

Ask is - As soon as sparepart item selected, supply subinventory and locator defaults automatically (Both attributes) from predefined setup .

As per Doc -

It says "the supply sub-inventory and locator values are automatically populated based on a predefined setup"