Transaction not yet indexed

21b91nkubZ4A5TAFZd2rTicRX7a1msFyJtXUruuc5sa4EnC6JFSakcM6dTng8Z89PrB5W1dSe4eP9UpxpPC6Jys2

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