Opportunity types are often used to identify the source of the opportunity. For example, the default types include "Website Form" and "Inbound Call".

However, the type can also be used for things such as potential client classification, or some other type of business lead classification.

The precise meaning of the type is user defined and will vary based on the purpose of the database.

Returns the names of the account's opportunity types as an array of strings, sorted by name. Inactive opportunity types are included; trashed ones aren't.

["Inbound Call", "Referral", "Website Form"]

To see whether an opportunity type is active, get it by name with Opportunity type.

Opportunity types can't be created, edited or deleted through this endpoint. On an opportunity, type holds the name as a string; setting it to a name that doesn't exist yet creates a new opportunity type.