Pass null values to NetSuite custom fields

Introduction

A limitation of the NetSuite API is that you cannot pass NULL or blank (empty string) values to custom fields in NetSuite.

Pass null values using Integration Studio

According to NetSuite's documentation on CustomFieldList, custom fields can be set to NULL by submitting the field in NetSuite's nullFieldList.

In Integration Studio, you will not see nullFieldList as a field or option.

Instead, you can pass NULL or blank (empty string) values to custom fields by mapping the source field to both the externalId and name fields of a target field.