How do I add a list of values to the Category field for my Attachments in classic Sales?

You must set the profile option, Attachment Component Basic Enabled (ZCA_ATTACHMENT_ENABLE_BASIC), to No to display the Category field in the Attachments page for your sales objects in classic Oracle Sales. You can then add values to the Category drop-down list using the Manage Attachment Categories task.

You must use an attachment category to classify and secure an attachment. While adding attachments, you can view the available attachment categories and add the attachment to one of them. An attachment entity is usually a database entity, like, for example, a table or view, that represents a business object with which attachments are associated. For example, categories associated with the expense report attachment entity are available in the attachments UIs for expense reports.

The association between attachment entities and categories determines the use of categories for an entity. You can configure the associations when managing either entities or categories. Between the Manage Attachment Entities and Manage Attachment Categories pages, any change in association on one page automatically reflects on the other page.

Each attachment UI must be defined with a corresponding attachment entity. For example, the Opportunity object attachments must have the module set as Opportunity Management category and must be attached to the entity.MOO_OPTY