Can business trips be considered as short stays towards the mobility rule?

The eligibility rule refers to the actual place of residence of the researcher, or, the location where the researcher has undertaken their main activity. Except in the case of cross-border workers, the place of residence and main activity are likely to be the same country. Short visits to other countries (fieldwork, for example) and holidays are not considered for the mobility rule, as these do not change the legal residence and/or main activity.