Amazon takes 10-60 minutes to receive updates even though Codisto sends messages to Amazon immediately. This includes inventory edits from your e-commerce Platform to Amazon (e.g. more goods received)..

Because of this, it is possible for a merchant to oversell using this channel. Amazon can process a sale if the product has run out of stock in the past 10 minutes. 

If you have fast selling inventory, consider using the Quantity Buffer option in the Web Quantity field inside Codisto.

This can be done in Single Edit Mode or Bulk Edit Mode:

In Single Edit Mode click on the item and scroll down to Quantity as per below.

In Multi-Edit mode under Offer Info you will see the Web Quantity column as per below.