Transaction not yet indexed

u21e5SDZprosSUnnsvd1oq9s6FzFxafCsSB8pro3UR5QZAwE8zSQLvRfCqtvnSWKH7Bmqekx3Hv1dSc7jwcXQHF

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