In the Transaction List you don't see the Payment Reference (like TRX ID of TWINT autogenerated).
You see this Number if you open the Transaction (/transaction/view/xxx). For TWINT it is "Transaktionsreferenz", for Credit Cards it is "Händlerreferenznummer" as Example.
It would be very helpful, if you create an Additional Column with this Information (for PostFinance, TWINT, Visa, Mastercard or whatever).
The Reason is, that this is the only matching Number within the TWINT Portal (or other Portals like Six "Your Reference" as Example. It is needed to find and identify Payments.). Otherwhise you only have Time and Amount.