Hi @Pat_Huang,
An address for a service area business is still a required field in Yext. It is also worth noting that many publishers do not accept listings without an address. Service area businesses can choose to not sync this field to customer-facing listings via the ‘Hide address in listing’ checkbox in the Knowledge Graph or by marking the ‘Address Hidden’ field as ‘True’ in a bulk upload.
That being said, you can use “filler” address data for the Knowledge Graph for service area businesses that do not have physical locations. You would just need to specify the name and type of service area for each business. You can find bulk upload instructions in this community post.
Let us know if you have any questions!
Thanks,
Jamie