# Product API Methods for item management. ## Create item - [POST /api/SKU/CreateSKU](https://developer.wineshipping.com/api/v3.1/openapi/product/createsku.md): Successful execution of this method will generate a new SKU in Wineshipping's system and will return a transaction reference identifier. Store this identifier back into your system for reference later in the event there is an issue with the SKU. ## Update item - [POST /api/SKU/UpdateSKU](https://developer.wineshipping.com/api/v3.1/openapi/product/updatesku.md): Update an inventory item ## Retire item - [POST /api/SKU/RetireSku](https://developer.wineshipping.com/api/v3.1/openapi/product/retiresku.md): Successful execution of this method will deactivate a SKU in Wineshipping's system and will return a transaction reference identifier.