GST authorities are working out a mechanism to deal with the taxation and registration issues related to shared warehouses maintained by e-commerce companies, where multiple suppliers store their goods for the last mile delivery, an official said. The issue of taxation for warehouses has cropped up after multiple suppliers have geo-tagged the same warehouse as their 'additional place of business' under the Goods and Services Tax (GST) rules. "We are working to see whether a 'shared workplace' or 'coworking space' concept can be implemented for the warehouses maintained by e-commerce companies to store goods of multiple suppliers," the official told PTI.