What happens when this goes wrong?
Every other page shows this payment working. Here you choose what breaks, and follow the damage — because a hold, a return or a missed cut-off is the system working as designed, and reading one calmly is the job.
Pick a failure above. Nothing here is invented — each one is a reason code this rail really uses, at the step where it really strikes.
One cheque, one clearing exchange, direct participants only. Real cheque truncation exchanges many images per cycle and settles the net, with return windows and re-presentment rules each system defines. Cheque Clearing Co is fictional and amounts are illustrative. Every failure here is authored on Cheque truncation clearing, with the sources that back it.