Hi @BrendaH,
Welcome to the Docusign Community!
We are glad to have you here and can't wait to help share as much knowledge as possible.
I am sorry to hear that you haven’t been able to send your envelope due to this error, but I will assist you in solving it.
The error you reference is triggered by a Pre-Fill field in your document, these fields are expected to be completed by the sender and not the recipient. Because of this reason you are able to send your envelope if you set it as optional.
To correct this behavior you will need to delete the radio group you created and drop a new one from the Standard Fields pallette, offered at the left side of the screen during the envelope or template creation/correction process.
For more details on how to add fields to your document, see:
Add Fields to Documents
Feel free to let us know if you need further assistance with this.
Thank you for using Docusign, we hope you have a wonderful rest of your day!
Best regards,
Alejandro R. | Docusign Community Moderator
Please click "Best Answer" below if you find my reply to be a valid solution to your issue!