Transaction not yet indexed

668FS4GUndtM5ZeGBP4HEfz5FDY52GVQKPLJft2dsuB2qcZSePM2zMRspy5LxXKs2kjoLehSiuqH48hGXyJnbfc3

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