Transaction not yet indexed

AB91dxhTWVasWpp7BqsMv2nX8BWMWPVvroLdckLmkrnqcGH9F1cKd5K9Kvc1T8dEA7JuxwEGyDyYd5LGG7W7NQT

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