The spokesman emphasised that Israel had yet to provide such an explanation.
From May, the crackdown is set to include even Afghans awaiting resettlement to Western countries.
The security situation in the region is highly volatile.
Ms Baerbock was scheduled to attend the meeting directly after returning from a short visit to Kiev on Tuesday.
The October 7 attack by Hamas left some 1,200 people dead in Israel.
Compensation for other victims was covered by the war reparations paid by Germany after 1945.
Ms Baerbock said the effects of the two wars are hitting the poorest people the hardest around the world.
