Transaction not yet indexed

MphkT7ySEufSGwMjZAfJp939LEwG81ddyCLkhKE7Wj84k7YNiMTds2SJspbfjY9vcoLCYaVsTM16Q7u4v3QGAJZ

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