Transaction not yet indexed

Am91eAEFyfSZXWN2TRrDcaCXhutNrJRk4AkYuJYsWKbUVe3WBaNep3XVBaunDahW5irfN8nDM5u9mRNNJ7H1K17

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