Transaction not yet indexed

Xs21E8SfFFk9PMC8mR4nym1rFdAWQoUBeLYB8e6fpJdp6wahdXdq4X5r5KLWfAMVYCYv4kfHmRVE6yLb3GKB9rx

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