Set Longitude and Latitude When Manually Creating Activity

Summary

Update longitude (accord_x) and latitude (accord_y)

Content

Our customer covers a very rural area where address information is not found or restricted on Google Maps.  They already have business processes in place to capture the coordinates with the customer information. We are unable to input data into the accord_x and accord_y fields.  We are unable to update the fields with a message scenario as well.  I was told that Routing works best when coordinates are provided.  Our 1st phase does not involve any external application integration and all activities are manually created. How can we provide coordinates for routing without middleware intervention?