The Error:

Error 1: Mismatch between sold and purchased quantity

Error 2: Mismatch in stock shows in Stock-Report and sales screen. Sales screen accepts products greater or less than as in stock reports.

Cause: This rarely happens because of some unknown reasons or if you try to manually update the stock in the database.

Solution:

NOTE: You must have the role of admin for this to work.

Step 1: Go to this URL  https://workplace.thulo.com/reports/product-stock-details 
Step 2: IMPORTANT: Select the business location and press search button. It will show the list of products for which there is a mismatch.
Step 3: IMPORTANT: Click on Fix button for each product.

Refer to the screenshot below