Set the transaction supp_id to the initial transaction_id to help keep track of the transaction and its association. Alternatively, group_id can also be used for the same purpose. View both fields on the transaction schema.
Platforms can combine the initial transaction and the Fee transaction when displaying the user’s transaction history
The separate transaction will appear in the user’s default statements
For card transactions, platforms will need to provide a separate provisional credit to cover the additional Fee whenever the user disputes the transaction in order to comply with Reg E