Field help (RSGMODSUB) 

This selection allows for the notice of a change of submission mode (monthly/quarterly submissions). If one entry except "no change" is choosen, a correspondent label is written in the export and transmitted to the fiscal authorities. For the legal implications of this notice please refer to your tax consultant.

SEEINFO This applies only for file type "CSV for Sage ELSTER Client".
Standard setting is "no change in submission mode".