OptionalmethodArgs: {OptionalmethodArgs: {Produces the CustomerPasswordTokenCreated Message.
Allows converting an anonymous Cart to the active Cart of a Customer with cart merge.
Creating a Customer produces the [CustomerCreated](ctp:api:type:CustomerCreatedMessage) Message. Simultaneously creating two Customers with the same email address can return a [LockedField](ctp:api:type:LockedFieldError) error.
This endpoint provides high-performance search queries over Customers.
Checks if one or more Customers exist for the provided query predicate. Returns a
200status if any Customers match the query predicate, or a404status otherwise.