To submit a data feed to Google Product Search:
  1. Sign in to Google Merchant Center at www.google.com/merchants.
  2. Click the Data feeds link.
  3. Click the New data feed button.
  4. In the Target country select box, select the target country.
  5. In the Format select box, select googlebase.
  6. In the Data feed filename input field, specify the name (test.txt, for instance).
  7. Click the Save changes button.

To export product data from Merchium:
  1. In the administration panel, go to Add-ons > Manage add-ons.
  2. Install the Data feed and Google Export add-ons.
  3. Open the Features tab on the editing product page (Go to Products > Products and click on the necessary product name link) and fill in the appropriate fields.



  4. After these steps, you should go to the Add-ons > Data feeds page and create a new data feed or export a demo feed .
    NOTE: Your feed should be created according to Google requirements which can be found on the following page: http://www.google.com/support/merchants/bin/answer.py?answer=188494