@Daryl what specific field? Search fields are not always named the same as record fields.

A custom field, but anyways we find solution we copied the saved search that source the previous vendor for the custom field. Thanks for the response

Exactly. Summary saved search fields are only available via record load. You can simply see this by performing a search in the UI. I believe searching in Suitescript would mimic the same behavior. In fact, I wonder if formula fields behave the same way.

I believe anytime the custom field value is not stored it's not available for saved searches

I vaguely recall instances where you can have a non store value field that is a formula, say made up of other values available in the search itself, and then it will work

Thanks for all your responses.