Transaction not yet indexed

21Lku3L96zmm793jmSdwXTj1r1tWPCbnKkNaSHLTsdgrkMs1jgfXVjYFe3SyuBBRMxSS4sB2cZmr8SgqzuV9N8w8

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