Connected remotely to Ms. Sally's PC with Arvin and installed and checked the printing of barcode, there is no zebra printer in the Head Office though we tested it using the default printer, the purpose of this is to check if the same error will be encountered in the head office, if there are no errors encountered, this will prove that there is no problem with the application, because it is tested to the two different laptops already and no error encountered, as per checking, there is no error encountered, the application searched the PO successfully and while printing, no error is encountered and the label to be print is on queue, this proves that the error is encountered in the warehouse only and prove as well that the error is the connection. Ms. Sally and Sir Dennis advised Ms. Donna to test the printing of barcodes again, as per Ms. Donna, the printing is now OK. she can print the barcodes continuously. We discussed this with sir Dennis, and we believed this is solved by opening the port for the IP, as this is the last activity done yesterday and no activity has been made yet on the PC. 