Transaction not yet indexed

21b537eg7ZJJ5sFJxpfwjGGPacHSDRAjGNGmBWj1FLgKYAzRJhLhcaJHJiMSpAe9PyN7kZWafQbHcnQ9CYCtGhD2

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