Transaction not yet indexed

21UdkAihRjDQpwCde3ud2Y7DQ61frtNyvsmoCRSu8TrAUSMBiVU7MarEfQADxGEbZTcYvPA3vkHT2VWDNY8dFC7F

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