Transaction not yet indexed

AmnSFuSX31krLqFMyAASZbKCYC8pmq23mS8wS7K5QZyU5BDAYCaLtGzMidjWksSpLKKBj2DyS9dovvP2kXYjoES

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