API parameters arguments

Retrieve inventory adjustment - GET /v2/inventory/adjustment/{adjustment_id}

in this for {adjustment_id} what id we need to be passed to get the data

like that same for Retrieve inventory physical count
GET /v2/inventory/physical-count/{physical_count_id}

what id need to be passed for physical_count_id

The BatchRetrieveInventoryChanges endpoint will return either an adjustment or physical_count which both have ids. You can use these ids to pass to the Retrieve Inventory Adjustment endpoint.