Transaction not yet indexed

21u6iVVbToRYd4AcgAc7YXgfMyoKtHhq1mRngj5j2GZfisYbxDFpbinhFesrpWGnbFHSwfoExF64eWpA2vUGcSsk

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