Anatomy of Pick Release

Pick release will create data in

mtl_txn_request_headers mtrh  ( pick wave )
mtl_txn_request_lines mtrl
wsh_picking_batches with mtrh.request_number = batch_name

mtrl.txn_source_line_detail_id = wdd.delivery_detail_id

if rule has prior reservations flag yes, then only released lines are reserved 

If rule has auto allocate flag as yes , then mtrl is allocated ( mmtt populated)

If any line is backordered, then corresponding mtrl is line is deleted

corresponding mtrl line id is removed from wdd