This transaction is confirmed. Also available on the blockchain explorer: https://live.reddcoin.com/tx/42cd739b55345e95edb308a426b1b5ab6a82d8c3943e0af3da407f97181a374b.
Means that the RDDs are sent succesfully by you.
So, a few questions:
- You say the amount is not received by the other party. What does the other party use? Reddcoin Core also? If so, is their blockchain fully synced?
Are you both using Reddcoin Core version v3? Preferably the latest version (v3.10.1). You can check your version via Help (menu) -> Debug window. Which version do you have? And the other party?