# Shopping List Messages

Messages that represent a change or an action performed on a Shopping List.

Messages are available in a variety of [Message Types](/api/projects/messages.md#message-types) specific to a resource. Common fields across all Message Types are represented by a base resource, [Message](/urn?urn=ctp%3Aapi%3Atype%3AMessage).

You can access Messages either by querying the [Messages API](/api/projects/messages.md), or by subscribing to them with a [Subscription](/api/projects/subscriptions.md). To query Messages using the API, you must [enable the feature](/api/projects/messages.md#enable-querying-messages-via-the-api) first.

### Shopping List Messages

Messages that represent a change or an action performed on a [Shopping List](/api/projects/shoppingLists.md).

#### Shopping List Line Item Added

[type definition](/api/projects/messages/shopping-list-messages.md?urn=ctp:api:type:ShoppingListLineItemAddedMessage).

#### Shopping List Line Item Removed

[type definition](/api/projects/messages/shopping-list-messages.md?urn=ctp:api:type:ShoppingListLineItemRemovedMessage).

## Related pages

- [Area overview page with navigation](/api.md)
- [Previous page: Quote Messages](/api/projects/messages/quote-messages.md)
- [Next page: Store Messages](/api/projects/messages/store-messages.md)