Transaction not yet indexed

yk18tNRCuWrUfCM9EUzGM7KC9b2ufjKYdEfKEfVbMYU2jsYeCeEWSwPfMbsKKotT37GQiN1TmTMLa7AZQYfwnSY

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