Transaction not yet indexed

AMKixgDS3ku9wsRJXhP5jk1EpxdjR4ergT87dJepAkKcyiC2PMkqfQGov2N4MY8GbnLD5M1fkP7RHxJdnoDV2k7

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