Item page error message


I have created a doctype as “Product Parameters” and have customized the same in the item custom form.

But I am facing issue with this, like in the product parameter option when i check jersey as a product type, a table will appear.

After selecting the available options in the particular fields in that table and on clicking on Save I am getting an error message. This error message applies to all the fields of the table.

I have attached the screenshot.

Please look into this issue and help.

Thanks & Regards