Transaction not yet indexed

m421tGcM4qPqm7gVxujRTwZeGZL3QbDTb8UDVgaZTqGFXBNxRMSQBJw5dxiPVjtrFXpzTRPyceih1YT7YYiBGH7

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