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Click on Choose File, find your file, choose either camt053 or camt054 as datatype (depending on your uploaded file), then press on the green button to upload the SEPA XML file.
← Click on this button to refresh this tab, to see which transactions have been imported by your file.
The status also shows you visually over the entire process whether the process was completed or not.
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You are given the option to manually assign transactions, which have not been successfully validated, with the corresponding invoice:Select the required row with the transaction number and choose the invoice to which the payment belongs in the lower area.
E.g. he invoice did not yet exist (and the payment was received up front), this function is handy to utilize.
→ Click on this button to start the process, then find the correct invoice.
In case our system was not able to find the invoice (or the invoice did not yet exist (and the payment was received up front), you can try an automated process.
→ Click on this button to start an automated process for a specific transaction, so the system will try to find an invoice this transaction belongs to.
You can also 
ignore and 
restore a transaction.