You can assign the following types of packages:

Display package

A package for read data access. Required.

Put package

A package for write data access. Optional.

If you do not assign a put package to an entity or relationship type, you cannot create or edit that type. For example, if you do not assign a put package to the Product entity type, you cannot create a new product record or edit an existing product record in the Hierarchy Manager. You can only assign a put package that is put-enabled.