Rejecting a transaction is the second possible action that can be carried out when a user receives a new transaction.
When the other party in a transaction receives a new transaction request in situations when the and created and sent to the other party, they have to agree to the transaction terms before the transaction is allowed to proceed.
reject a transaction
For example, you can a make a post request to the endpoint above and pass in the json data below to reject a transaction.
"reason": "I am rejecting this transaction because the amount stated is not what we discussed"