A digital service simplifies payment but does not explain the required item. I propose to link amount, reference and channel for clarification.
In the example, an accessible communication makes it possible to recognize a data to be verified. Ease of execution does not coincide with understanding the obligation.
For tax matters, a competent source is needed. A useful transformation also makes it easier to inform and contest through appropriate procedures, preventing the user from having to choose between paying without understanding or blocking without assistance.