Transaction not yet indexed

21NkyUB87ZDgyHM4VMUSWRqRhjug4dwQePrVGy7ZSxie2d43kZBGTYXLR4mHSgDZ3nBXtkDk3YP9k3PBBobc5837

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