Transaction not yet indexed

5k21kmXXnr3xpfRNPvLrEx4BPSsNWPzafb6ksCyuHfrSAy52TkGUGAC3YnV4KsubU3uwZHGLYHCSArT4r7KtoFws

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