Salesforce Facts by Abhishek

Geolocation is a compound field that count towards the org's limits as three custom fields: one for latitude, one for longitude and one for internal use. Reference:  https://help.salesforce.com/s/articleView?id=sf.custom_field_geolocate_overview.htm&type=5

Similar to retrieving, we can also update custom Geolocation fields from LWC. We need to refer the latitude and longitude value separately suffixed with '__s' since it is a compound field. In this example, we are updating a Geolocation field on Account taking the input from LWC. Attached are the screenshots.