R12.1.3 TCA- Can create a record in HZ_PARTIES table without creating a Supplier or Customer?

My current client wants to know if there is a way to create a record in the HZ_PARTIES table ALONE without creating a Supplier or Customer,  then this record can be used later to create a Customer or Supplier whenever they want.

NOTE: We already know that if we create a Supplier first then the Party for this Supplier can be used to create  a Customer later. And we also know that if we create the Customer first then the Party for that Customer can not be used to create the Supplier later ( unless implementing the Supplier Hub or/and Supplier LifeCycle Management kind of modules)