Transaction not yet indexed

Nxt4aMc2LjTUydJ7pnN8HFVkbbrfpvktcc6HrUvK1dW2fkg5wnUQh6v6GqWJArq2RfZTApcG8RcDsgW4Lkcx391

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