Actually, there are a lot of options the clinic has.
1st: The clinic can keep the delivered goods. They can simply substitute one tablet of 200 milligrams of Gensol with two tablets of 100 milligrams. Additionally, this provides some level of flelixibility. For example, if a patient requires 300 milligrams, then they can give out three tablets.
2nd: The clinic can accept some boxes of the Gensol, and reject some of these. They can keep some tablets like in the 1st option just to have some supply of Genson in the clinic and reject the others.
3rd: Since this is classifies as a nonconforming product in the perspective of the clinic, the shipment can be rejected entirely.