Transaction not yet indexed

28uMpu1ZusbKcQf2XGGQmXWD1dcsWkxN9E3tMiY7YHU4c3umNN1wq5DAcMdn8w2yt4fzsVbfJcrWZEj2tLCPk522

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