Transaction not yet indexed

AMBm8mLNsjuNRoJJ3vxdP4v2FujjPyyTakmDYLFfPiwN7LuKcHcoNozFbokfrDvq7CgRf9m2nbkx5dXKccEjDUy

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