You can make changes to the equipment in your model to keep up with your design requirements.
What do you want to do?
A padlock in a dialog title indicates one of the situations below.
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You do not have Write permissions to one or more objects.
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One or more of the selected objects is not in a working state.
You need to set the Approval State property to Working, and you must have Write permissions to the object. Otherwise, you cannot modify the selection.