Transaction not yet indexed

MpkrMvznuAQDkaAPFByZsPpMVUkjgDAWYwsYKzLywqVS6xaVW3y1CRnyvwbfA6pQN8ssiPxqETzMkrWZnNGPTey

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