Transaction not yet indexed

ex66EwvTtoi88ULdxpWEDPiUSVCngwDMsdScQ93P6ZsmVCJ3vxywsHMPaKtWGxNGdP8GdqHgecHXFbpVvFcFEHm

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