I'm sure this is a fairly simple fix with some code however, I'm not super web savvy. I sell one product in multiple colors. For my product, there are different lengths available.
The problem here is that my customers who choose custom length almost always forget to fill this information in which delays their order delivery time.
How do I go about making it mandatory when choosing the selection "Custom" to type the custom size in to ensure this never happens again. I pull my hair out every time this happens and I don't have much left. Thank you for your time.
You can add text box as line item property on product page if user select custom option, you can use this link for that.
you have to do some Js code to hide and show custom field text box.