User cannot add items to cart

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 7.3
• Fix Version/s: 7.3 FP1, 7.4 CE GA1, Master
• Component/s: APIs, Integrations and Extension Points → Headless Storefront APIs
• Labels: None
• Severity of Issue: Critical
• Git Pull Request: https://github.com/liferay-commerce/liferay-portal/pull/295

An authenticated user is unable to add products to a cart. They can retrieve products from the catalog, create an empty cart, create a cart with products but cannot add products to an existing cart. There are no errors in the logs, just a forbidden response