Purchase Exception Rules exception.rule tree,form [('model', 'in', ['purchase.order', 'purchase.order.line'])] {'active_test': False, 'default_model' : 'purchase.order'} purchase_exception.view_order_form purchase.order

There are exceptions blocking this Purchase Order:

purchase_exception.view_order_tree purchase.order purchase_exception.view_purchases_order_filter purchase.order