Foreign key &-& (dependency factor & is incorrect here)

What causes this issue?

The type of the foreign key fields was specified incorrectly. Since all
the fields used in the foreign key are in the key of the foreign key
table, the definition "no key fields" is incorrect.

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?

Select either "key fields" or "not specified" as the type of the
foreign key fields.

Error message extract from SAP system. Copyright SAP SE.