Transaction not yet indexed

NU8GMpXmLSHFNEKsSfwYPUgFXHbuSwqc8hxb9EEQjaFcN4eHnwWSAvsFbHYmftvG8pCS9N6VzKeZrZBHosuGBL1

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