Transaction not yet indexed

Nmff3QeU6d9ofoT47x7gMqSCMoaW3fxLVdmmfLvBYDXBqqnG38C2KnB3UHegrsWooXem1SZa3WrqUXpqo4aXMTx

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.