Informative note
The different content specifications available in this section of the Help area enable users to put together files that are valid for the submission of tax returns to be processed remotely, as well as for importing data from a file in cases where this facility is enabled.
In the former case, the tax return or declaration to be submitted must conform to the logical structure defined by the current content specifications. From this section of the web you can check the logical structure defined for the relevant form.
For returns or declarations submitted via an online form, data can be imported from a file which is generally compiled using a Help Program.