Transaction not yet indexed

a51QUkEwtxDD1oLwjyfEVJ8k2Qkd9ECJp4aJrE8UxQEhQwp4FmtbDUC3PGMRSgGq8vQEbub54Wuk4ePq8F6kyCa

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