Transaction not yet indexed

668i28NnDqZkXovCWCvK5joi9qVNNvzR6MSoqzAXzC35WbBi1i2TgjPJGj2aZTGRuJDrM4eGLnL4fzDjuNny6FiR

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