Record processing
Input processed, recovered outputs, rejects and loss, for one batch or several days.
Process tab. Choose the days it covers (From, To): one batch or a summary of several days.
Input processed: how much of each category went into the machines.
Recovered output: how much of each output came out (shredded plastic, bales…).
Rejects: what could not be used. These wait in stock until you discard them in an off-take.
Processing loss: leave it empty and the app calculates input − outputs − rejects. Press Save.

If outputs, rejects and loss come to more than the input, the app shows by how much: check the numbers.