Hello Vishnu,
Please refer SAP help,
"If it is necessary, in individual cases, to create dependent requirements and procurement proposals for the phantom assembly during the planning of a material, you can override the Phantom assemblyattribute in the BOM. Enter an appropriate indicator for the explosion type in the item screen of the BOM. You maintain the explosion type in Customizing for MRP in the IMG activity Item data"
BOM Explosion with Phantom Assemblies - Material Requirements Planning (PP-MRP) - SAP Library
Check the phantom assembly BOM item in the BOM in quality and production system and confirm.
Best Regards,
Ameya B.