Adds one or more standalone, bundle, option product, or other assets to the cart and creates a line item for each based on the request body details.

Mandatory Fields (each line item):

• PrimaryTxnLineNumber - required on add to identify the transaction line
• Product.Id - required for Product/Service and Option line types
• OptionId - required for Option line types

Required Fields:

• cartId (route) - required
• lineItems (body) - must not be null or empty

Limits:

• A maximum of 5,000 line items can be added in a single request. Requests exceeding this limit are rejected.

Responses

• 202 Accepted: the add-line-items request was accepted for processing.
• 422 Unprocessable Entity: the request could not be processed for the cart.
• 500 Internal Server Error: an unexpected error occurred.