Transaction not yet indexed

MtKnkFbrUehScDrprSfhpDwh4G2VL5sV4VH4fzKYsGfuFzKGAk86RbdQsvXjDyxSgGs6J2pgmZ4eFMJqEwKWyC2

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