Transaction not yet indexed

MPExxHtkAP6zy8b7AP1Yigvt3WbGWeCjf21Fr9T5DUgJoZF4bdxfEAYvjWSSdxcPfQzb5Gg274WwGkBCb4NRSer

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