Transaction not yet indexed

1SfBkoU8AbCy6TSFRhnqrYYvAa8jpSW8mF3Uga5jWnf2BBswRC42eayXRyb7ta66ZqKVdPs5RuGgG5B3h8UY1vT

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