Sorry forgot about this.
You need to send something now as deadline approaching. I would send this.
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I am repeating my initial challenge that the contravention did not occur as there was no suspension sign on the parking sign in the bay my vehicle was parked in.
I was entitled to rely on the parking sign.
In your rejection you say that 'parking signage does not need to be positioned directly adjacent to every individual bay' - which is not true as an unsigned bay is unrestricted, but in this case there was a shared use parking sign granting parking rights during controlled hours to permit holders or pay by phone users.
Should you reject my representations I put you on notice I will seek costs at the tribunal and I trust this time you will admit your error and cancel this PCN.