Confirmed orders in one file, capacity in someone's head

Orders arrive and are confirmed because confirming them is how a business grows. The question of whether the factory can produce them by the dates promised is answered later, on the floor.

The sheet records commitment, not capability

An order book tells you what was promised. Without capacity alongside it, nobody can see the week where three orders converge until the week arrives.

Weekly load, not total backlog

A total backlog figure can look comfortable while a specific week is impossible. Load spread by week is what makes an overcommitment visible while there is still time to renegotiate one date rather than miss three.