Transaction not yet indexed

ok531Ums2TPfmwgCe2Y2UEmdzkPCoarCDxWGdCTPgTdDxho8bXzvhNd5H2UeWVCAQHpMjEESsfRup4PiVnTPMsz

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