Deactivate the Unit Cost field for Non-Inventory items and or add a toggle to enable or disable it.

Issue Description:

when a non-inventory item with a cost is included in the Production BOM and the 'Calculate Production Standard Cost' is run, the unit cost does not match the total on the BOM cost shares. This discrepancy occurs because the cost of the non-inventory item is not added. 

Conclusion:

Including non-stock items in a bill of materials is a common practice. The expectation is that imputed costs for these items can be considered in production (finished goods). If the production item uses the standard stock issue method, these costs should be reflected in the variances and included in financial accounting. However, this only works if the finished product follows the standard stock issue method.

Recording imputed costs for non-stock items relies on an external calculation of value items and a manual entry in the cost price field of the item.

The main idea is to have a consistent and realistic calculation of costs for items not kept in stock throughout the year (e.g., small parts, bulk material, packaging material). These costs should be shown in the individual components and not get lost in other overheads. The goal is to separate overhead components for a more detailed and precise representation.

If Microsoft decides not to address this issue further, it would be preferable if the “Unit Cost” field on the item card were not editable for non-stock items.