No valid BOM for phantom material

What causes this issue?

MRP Live on HANA could not find a valid BOM for the required quantity
and date of the phantom material.

System Response

The system plans the material in MRP Live on HANA and issues an
appropriate warning.

How to fix this error?

You should check the BOM or the procurement type.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.