Transaction not yet indexed

21SU2K4rKRNgb4UEcEbfBb7Sy37Vz3U3yZ9MkGcJsAeKmtTJSCdkJPaemycrbKYbiGn6DBfu2DoXMddXLYhPcqrK

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