Transaction not yet indexed

599a5mSmEUEF2eDwdvk9mVBNhCKE6B8DbGMGGWvBo6PnDFwXxSndDvBgu55Pj7ki2TbRsY8JB2jHynbacz2RAZn8

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