Transaction not yet indexed

MentN9juQd3b6REFP3a6ysfNdCBuFDLoCHQkKVbNCvhY6fynoFkPvUoFJ9XMHHiCVGqtujZEpUG9matVVBQiFc8

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