[Need to get the bussiness object name for User defined field in Sales order.]

Hello Ben,
We are working Sage100 and US region 

[Need to get the bussiness object name for User defined field in Sales order.]

I have created the user defined field in item master "UDF_TEST_ITEM_MASTER". I am able to get the field in Inventory management ->Item maintanence using the object name as "UDF_TEST_ITEM_MASTER".

I have added the "UDF_TEST_ITEM_MASTER" in the sales order line items and it is showing the field name as "ITEMCODE_UDFTESTITEMMASTER".

How do i get the object name of the user defined field value in sales order line values. Attached screenshot of the field name.

[How to add bussiness object custom fields in Sage 100?]

How to add custom fields in sales order and items?

Does the custom fields are supported in  bussiness object?