To read data from or insert data to custom fields in Coupa, you must configure the Custom Field Config property when you create a Coupa V2 connection.
You need to specify the field name, the field type, and the IsAPIGlobalNamespace for a custom object.
You can specify custom fields for different objects, separated by a line break. When you specify multiple custom fields for a particular object, separate the custom fields with an empty new line. Enter ;\ at the end of the line except for the last entry.
Note: If a field name contains an underscore, the Secure Agent replaces the underscore with a hyphen.