Transaction not yet indexed

21DFbkNd6kXFGBq31mehZG9fwCUGKabSUuZDeD6iSA5yxvALfDbHQiz1AhFST3LtcHa9gpaXFiQSVs5BiT1MPv4y

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