What is data verification?

During the data validation, the information you have entered in the tax return is checked for plausibility, e.g. whether your personal details are complete.

This is particularly important for electronic submission, as only complete and consistent information can be transmitted.

If errors occur during the data validation, they must be corrected first. Then, run the validation again. Once all errors have been eliminated, you can submit your tax return electronically to the tax office.