What is the XRP "destination tag" and how do I use it?
Destination Tags are a feature of XRP Ledger payments, and are used to indicate the beneficiary or destination for a payment. The destination tag is used to indicate who should be credited for which payment. Think of the destination tag as a unique numerical memo specific to your cards XRP Ledger address. The destination tag is required when sending any XRP from an external address to your Uphold wallet. If the transaction does not have a destination tag or the destination tag is incorrect, it will be rejected.