Transaction not yet indexed

m21StMz5WQG7BZ99zUvMvvd3Qiq18r8XhyWwc6ybYjdWUigN2zZsqY5QbTCuYCBUHZTbf2CxD4Gx8YpViwS23P6

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