XBRL The Submission

How to open an XBRL File
If you need to troubleshoot an XBRL file prior to submission, we recommend that you don’t open the file in notepad, use a text editor with XML formatting support to view the file in a viewable format.

Submission
The submission should be only 1 XBRL file for your main return excluding NSTs (assuming no XBRL streaming, which currently is not supported byTabular). ( Reference EIOPA XBRL Filing Rules III.4 Section completion of the instance document ). For test purposes, it is ok to submit an individual QRT to your regulator portal. There should be a flag available in the portal to alert the consumer of this being a test rather than final submission.
If you need to re-submit your filing due to an error, you need to resubmit the entire file, not just the corrected part.

National Specific Templates (NSTs)
These are national specific requirements of a local regulator. They may also need to be generated into XBRL depending on the Regulator. These documents have a separate entry point and so therefore should be created in a separate file.

Structure of Regulators
We generate an XBRL to submit to a regulator. The flow of information follows the below path

1) Main XBRL file (Every template that is not an NST) -> Submitted to Local country regulator. Local country regulator passes on the file to EIOPA (the Central European Regulator)

2) The NST XBRL file gets submitted to the regulator and stays with the local regulator.