Transaction not yet indexed

AMmnWfzFqB8jm4KreyJwopu9JtwwwpzSTiRnR9gwUz41fkZTKfC9PmAqPN9yXzG9S2EYjUGsSWeX89jcFXMezFJ

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