Transaction not yet indexed

AMBMCDDtZcaUCtDZw5uiw9mjxKdSnpBJTj9SQgner8kYhcZqh5sFgntWsi7L8n3sLfqz8Lcb5w1TJEtCZWYoToy

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