Transaction not yet indexed

u66QyQvUmCAwLMEhXoXgQvuthaFZJ6gEqBGCHEbY4Jxt7nVN1M8dxab5BT4ye3dMfXrn88vtYypPtviLB8UEymU

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