Transaction not yet indexed

Yu2M91RLnyGnSV3FCeQKXA487Hfxg8f5bs5mBfYp6B3unqZAXP66izVPmkyjTeXEEy6WV4bApQLj2jbCyuJqZqX

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