It supports preprocessing the csvs if you need to clean the data or compute some new fields which is really powerful. Once you are up and running it only needs some minor updates each month to map unidentifiable transactions I can do this in under an hour these days.
I expect most digital wallets to be made obsolete by such a measure, because most of the use of a digital wallet as described by the post is easy, nearly free digital transactions by end-users. Everything else can be done using your regular bank account. An ECB-backed alternative to Paypal, Venmo, Cash App et al. would certainly be more trustworthy to citizens and the compulsory acceptance by merchants will artifically solve the chicken-egg problem that most such private companies have.
Ditto for debit cards, which would pose a threat to Visa and Mastercard.
I'm curious what kind of ecosystem will exist around CBDCs.
[0]: https://finance.ec.europa.eu/digital-finance/digital-euro/fr...
A shop is perfectly within their rights to refuse to sell you something if you are not willing to use their accepted payment methods.
Legal tender simply means they can't sue you if you offer to settle their debt using a legal tender currency. If they have refused to sell you the item, there is no debt, therefore no obligation to accept any particular instrument
https://www.bankofengland.co.uk/explainers/what-is-legal-ten...