Transaction not yet indexed

5z21bFP2C5yhkjYxJ6YUsDBizddqEzXFQwWvqp7ByehXxJmL8H5sF3q2ndtPpZEjVcfDFZMHWMgEBh4jMuXTN9FK

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