Field dependence generation problems

What causes this issue?

The field dependencies can not be generated completely because foreign
key dependencies are missing in the data dictionary.

System Response

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

How to fix this error?

The view cluster generation log contains a list of all objects for which
no field dependencies could be generated.
Define the relationships of these objects to their predecessors manually
on the "Field Dependency" level.

Error message extract from SAP system. Copyright SAP SE.