There is a requirement to have a valid ticket (in whatever form) for travel that can be inspected by the relevant staff.
What you showed them was proof of a card that had been tapped in. Nothing more , nothing less. It is their decision whether to accept that or not.
An inspector can validly refuse to accept a ToD collection receipt if presented on its own. And what you showed them is equivalent to that, ie: there is a card that has been tapped in at ##:##am. Without them confirming that the method of payment is with you, how are they going to satisfy themselves that it is indeed you.
Not saying you have evaded or anything, but what you wanted to present is equivalent of "proof of purchase" at most, not a ticket on its own.
What you showed them was proof of a card that had been tapped in. Nothing more , nothing less. It is their decision whether to accept that or not.
An inspector can validly refuse to accept a ToD collection receipt if presented on its own. And what you showed them is equivalent to that, ie: there is a card that has been tapped in at ##:##am. Without them confirming that the method of payment is with you, how are they going to satisfy themselves that it is indeed you.
Not saying you have evaded or anything, but what you wanted to present is equivalent of "proof of purchase" at most, not a ticket on its own.