Transaction not yet indexed

518SmTcrJVLZHiBEo8mytpvZwru7b8AhHyz5w1niGXZ6FyiSoTiJhjtyszn2WSiwPfRdYdM5u4DPKBsrZpDnhL18

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