Hello Sir, I have added radio control tag inside the pdf file like below way : §-esl:signer1:Radio:Group("opt1")-§ §-esl:signer2:Radio:Group("opt1")-§Ja §-esl:signer1:Radio:Group("opt1")-§ §-esl:signer2:Radio:Group("opt1")-§Nee But getting below error : {"Could not upload document to package. Exception: The remote server returned an error: (400) Bad Request. HTTP POST on URI https://sandbox.esignlive.com/api/packages/907asg3jvcxYsSd6mBD4TN5HUV8=/documents.