Transaction not yet indexed

Ch16Eg51UsuYuNMW4xTJbsxxQhknLbREeMx5kgqueCTcFHWkABXVfQYcbMcCvrnusQ1d5YVoDpbAAoug8dMtM21

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