That code sample is basically how ISO20022 works, you create a file with instructions to move money from one account to another.

You would need to upload that XML to a bank to actually process the transaction.

There are other formats like NACHA (US only), where you have to generate a text file with a pretty specific format, and upload that, often via sFTP to the Bank's server to process.

The most straightforward way this is done is by SFTP'ing into banks. Check out step 4 here!

https://docs.iso20022js.com/quickstart#step-4-send-the-payme...

as some other comment has pointed out, this is not a payment library at all. It's simply an XML document builder for a specific payment description format, and doesn't actually facilitate a transaction.