Transaction not yet indexed

mpkLztXwE2CJ5WrfZ5tzx7Hicj4iAjPqaksi1G5CzEP8RFETvsay24guoJKk8pobHkbHeQCE66Q1cX3mRPp4Cs2

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