Phantom manufacturing parts are parts or assemblies in your mBOM which cannot be allocated to process plan operations. From a business perspective, these parts and assemblies are typically items that are non-stockable, but which can be published to ERP or MRP systems.

A phantom manufacturing part can have child parts which are not defined as phantom manufacturing parts. Non-phantom manufacturing parts that appear underneath the phantom manufacturing part are allocated to the process plan that is related to the first parent non-phantom manufacturing assembly.

In this scenario: