Code changes done in standard methods of RetailTransactionService* classes or added new methods in RetailTransactionServiceEx class are not 'visible' by Real-Time Service.
This blog post will show you the way to change color of DevExpress button of class SimpleButton.
MPOS fails to access Retail Transaction Service with error 'A Business Connector session already exists'.
This blog post will show one more way to unblock POS DLL files.
In this blog post we will have a look, how to use SQLConnection objects in case of multi-threading.