Correct Amazon MWS flow for item with existing ASIN

Question

I\'m getting started with Amazon MWS and I can\'t seem to see any real information on the correct flow for listing an item as an existing ASIN. Let\'s say for example I am s

Answer 1

You can simply use flat file template from amazon to load your feeds to marketplace with your seller account credentials using marketplace web service.

Use 'inventory loader' file type template that will override the existing items or create new if doesn't exists.

You can define 'ASIN-Hint' fields/column in file for the items those already exists over marketplace as your case is.

Idea behind is that amazon matches the provided ASIN value with feed with the already existed product detail and synch information accordingly.

Try uploading your product without ASIN-Hint and see process report you will get a good idea then.

You may also refer http://prashantpandeytech.blogspot.in/2015/03/mws-amazon-marketplace-web-service-api.html for step wise implementation