Possible catches based on past statements and decision. They don’t have to materialize, but we need to be vigilant:

• The German government might just be lying. They don’t have to report on decisions which weapons or other military equipment are exported to whom until much later.
• The German government might make distinctions between weapons and other military equipment and rebrand that equipment as for civilian purposes. i.e. spare parts for military vehicles, radio equipment, personal armor…
• The German government might satisfy itself with a declaration by Israel, where the material would be used and then not ensuring it isn’t used in Gaza. We saw the same last year in September when arms exports worth a hundred million Euro were authorized after Israel sign a waiver that they promise not to use them in war-crimes.
• The German government might have coordinated with the US to ensure the gap is filled, or organized circumvention by selling through a third country.
• The German government might have coordinated with Israel that this is only temporary and in return will use this as a fig leave to continue blocking economic and diplomatic efforts to pressure Israel.

The decision by the government is not binding like a law. There is no immediate repercussions for breaking it. The only repercussions are outcry by the people and media and down the line hopefully prosecution in The Hague.

German politicians really do not like to be called antisemitic for obvious reasons.