The wrong volume is in the drive

Hi,
I keep receiving an error message below that tells me that I’ve got the wrong volume and that I should insert 2012DS1DVD1. However, when I do insert DVD1 it just proceeds to prompt me to insert 2012DS1DVD3.
How do I fix this?

The wrong volume is in the drive, Please insert volume 2012DS1DVD1_ENG into drive D:.
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