Transaction not yet indexed

621NefDnbGk8tkkzXZeSnvQ5djC71qCSspMr1AVYhGQTGdXtEBhxXF5fK6HpDy7cX4FsTCSmiwx8Tw6JE8GPa7P6

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