I am having trouble automatically sourcing values from custom item number fields. Currently doing this via suitescript to fetch the values but I feel I should be able to do this by sourcing. We have custom fields stored on item inventory number records: container_type. I have a custom record where I need to be able to select an inventory number record and have that number's container_type populate into a field on the custom record. When I try to set the sourcing on the custom record field though, Source List = Inventory Number, Source From = ?. I do not have the option to select container_type. All fields are type list/record both on the inventory number and on the custom record. Any ideas why I can't source this field?

you are likely asking the wrong place if you are asking the suitescript channel for a non suitescript answer