Transaction not yet indexed

MkcB6fGRSgEzMVKwpN9uEterJa4MJhb1sxrSUmqhxXUeZeB7qjpemL512AmtTMMvVNrz8DmPrJFcGmbL8AsFNgE

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