Step 1 - Ensure that you have prepared your CT 600 Return spreadsheet document and have saved them in CSV file format ready to be uploaded. If you have not done this please go back to download the CT 600 Return spreadsheet document from "Download Spreadsheet" in the Tasking Zone. If you have prepared CT 600 XML file, ensure that it is compliant with HMRC CT XML Schema.
Please note - it will take about 3 minutes, depending on the quantity of data, to complete the uploading and validating process. Please do not click on any Tasking Zone button during this time. If you do the file upload will be aborted.