Transaction not yet indexed

21stHkG6MRniTntKPAMW91hRDbFdErWuVT2TZGdNdCTjfeGyMLAuLGeyHSLJNxpREtZJ3Ck4LECz8BvYhyL4aM18

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