Open Mind Commerce is an online e-commerce platform. To get set up just follow these instructions.
To integrate Open Mind Commerce and Tally first enable the Tally API by logging into Tally and clicking Settings > API Settings > Tick the box for enable the API, untick restrict by IP address and click Update. Once you have done this run the OpenMindCommerce wizard to configure your store and enter in your Tally username and password. Do not change the Tally URL unless told to do so, click the Update Configuration button to continue on to the further settings. Finally you need to adjust your payment gateways so that authorised payments are automatically marked as paid in your Tally account; to do that, in Tally just click Settings > Card Options and enter the same gateway information here.