Transaction not yet indexed

Mug1MCGmu8YEsgcdFJDk4SQX5s27RqHtA2U25fcS7m3q8wRReh4MwRKr6rzAvDuoU4Fu3tGC1y7pjAdMZPBrrPa

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