Transaction not yet indexed

51ubAT6DaBCNNvByD4fDRMs47Up4ucKN1KH6doVfarXgWH6iiUaQpGqaKtEPSAZyPBAJtj7pP6WgHBk4iUfCmvm9

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