Transaction not yet indexed

Sb21qnBfig5waEcXqQc54u7521WJewCG5rdSxpbr5Cp3qjHiUm9Tes2nmzm95fUabWKcdNdwaDCYPoNbxUJfdi8

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