Transaction not yet indexed

i21TUARrrk4KknbXR4LuhKfxrM6LjLqTUBVuLjKUnSjZYasvbtwrCRHTT7XQ89H8bGYDWPRCo8kRhftdYNJFPuF

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