Transaction not yet indexed

21mkWSadRnq4ETqZPuubb2nXbo4M2V75SCXpdSdKwp32dvyjqxSkLWZtsLd6Znd2iUGp5yH3bPKbKMFwHBfirAL3

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