As per §§ 66 - 68 German Residence Act, a German resident got the option to provide his/her third-country friends and family members with a formal obligation document (Verpflichtungserklärung) to assist their visa application.
I was wondering if there's a cap for the number of Verpflichtungserklärung one can request at once and/or during a year? In other words, how many people you can invite to visit per year? In there a cap?
To answer my question, there seem to be no time-bound cap for a letter of commitment a German resident can provide.
However, there seem to be a maximum cap of 4 persons one can invite at once. The number of guests you can provide a Verpflichtungserklärung for depends on either host's income. Spouses can also chip in case that one's income is not enough.
More information here:
https://www.muenchen.de/dienstleistungsfinder/muenchen/1063743/
