Transaction not yet indexed

668MmMnmrodcDCUq2KoVrr5TXZKwm2mq2qpp2dFDNWHSbFSTJMFTkGDtojWksKJGQvEY5YSGV1t6XcQLga8T1WPv

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