Validation of Class Diagram: Is the Proposed Model Accurate?

Question

I am not sure if i made this correctly, the meldingen is part of dossier. But there is a tool thats will make controles to check if the status of the tool is true, if this is correct than it wil make a check if the dossier_id can be find inside the data. If this is also true it should made a message that wil be shown inside the dossier.

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Please help advice

I tried to make the classes and controlles classes and melding is part of dossier, so i made a line from melding to dossier with generalization. But i am not sure that this is correct.