Transaction not yet indexed

4c21c6mjP3siSP7hbUA63UDKEdr5c3NCUBsNHPp2hVdyo6Dh37otBfym5qDcYmrktRBKYs6d2fRzeisLp3cxgkCS

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