I love zoho products...love them...there is nothing like them anywhere. When starting to use a new module, a user is not aware of all the features. However, what the user does or doesn't do in the first days of using any app in the zoho system sets many choices in stone that cant be changed. This prevents us from using the unique features Zoho offers. 1 example among many: we started using zoho invoice only and began recording sales to our customers regarding products that we purchase from a vendor in a foreign country. We then started using zoho inventory many months later. We tried at that time to assign a currency to the vendor but the system does not let us do that, because there are previous transaction in Zoho invoice that were not set with the vendors native currency (obviously, because we sell in our own currency, USD) . So we are forever blocked from taking advantage of the currencies feature. There are many examples of this including inventory tracking and many other features that will not work/cannot be changed unless they were chosen at the very beginning of working with Zoho apps.This is very frustrating to know that as loyal zoho users we are forever blocked from using important features. We cant delete past transactions and restart which is what zoho reps suggest on these occasions. Please make the system more flexible to allow changes!!