Transaction not yet indexed

21b4Dus45nxsWdqakdWoET3Bbsdcg8JxcLPYTiTUHEzR44bkCmKtyMFt7P2dkctyxNqYKiJX1ZRQY2PQYaL6dPnm

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