Transaction not yet indexed

yAMBAc1P879oWgJ5ZKF1qTd2DZ5kQQJF17cH6eJvHeQcaJ5gSErrxNJveqQUCenLd5rtUnxCMdeCLuMhWye9nJ5

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