Transaction not yet indexed

2a51bDJu4rcMKzti3jvYxX8qLr87wqtnoHYJKqUAkbfKNQHeaFD7wdunbF8b1ShFD8V9ioCmkw8kQwvaBrHN2gpu

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