Transaction not yet indexed

Nfb3MmqNEw87AFVFGPgnUWrBnhqferABXR8YPfpG1hUjZ2fDSmcX8xs81Suxuh2eBbvbugfwamurxL66fRQVsn6

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