Transaction not yet indexed

5b15Ps1mwAqmACXtTDJAeYx6AiXvTis71u8nnFcwRudPVdvad79ZhzSWT3XsYXR3G6zKEJVQTPG5zfYRccSN7Hp5

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