Transaction not yet indexed

21Mg8qTfcdvt1U6aqykZYCfzYeDqmX1rCnZf8b4ZYMGVgCtF7mfTiTbfw6uwhujYgPX5kGsKQcgJKJ7aubcEnq9y

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