Hi priscilla8484,
Welcome to Community! I can understand your concern with the transmitter number, required when filing your T4-slips electronically in QuickBooks Online Payroll. I would be happy to provide some insight here.
There have been some recent changes with the CRA requirements, as you will find here. We will be providing a detailed email regarding this, to ensure you're well informed of these updates, noting that the transmitter number is no longer required for the CRA XML form.
Should you require additional assistance, please don't hesitate to contact us outside of this forum. We would enjoy the opportunity to work with you directly, and ensure you're able to accomplish your QuickBooks Online Payroll goals, without delay!
Feel free to reach out again, if you have other questions. We would be glad to help!
