REST API PUT /V1/carts/mine

Question

Trough the rest API I'm trying to achieve that customers can save their cart/quote and have another new active one.

For that I'm trying to figure what PUT /V1/carts/mine does, as the docs states that it "Save quote".

But I cannot get it to work. It keeps returning "Invalid state change requested".. Every other /V1/carts/mine method works?

Answer 1

You are getting this exception message "Invalid state change requested" from \Magento\Quote\Model\QuoteRepository\Plugin\AccessChangeQuoteControl::beforeSave.

You have user permission issue for your access token. So you have to provide the access token which has permission to access that time end point. See details https://developer.adobe.com/commerce/webapi/get-started/authentication/

If you will use Integration token then you use any magento API end point https://devdocs.magento.com/guides/v2.3/get-started/authentication/gs-authentication-token.html#integration-tokens

Answer 2

Actually the custom REST API is throwing "Error message: Invalid state change requested" when customer does not pass the Authentication Token in headers. Magento 2 doesn't give access to Quote for users without authentication token.

Ref: https://magento.stackexchange.com/questions/217519/magento-2-error-message-invalid-state-change-requested#:~:text=Actually%20the%20custom%20REST%20API,for%20users%20without%20authentication%20token.