When you deploy Microsoft Visio 2010 and set the MSP file to use a KMS server, it will by default use a Visio Premium 2010 KMS client key. If this is not the version you intent to use you can change the key in the MSP file to one of these:
Edition | Key |
Visio Premium 2010 | D9DWC-HPYVV-JGF4P-BTWQB-WX8BJ |
Visio Professional 2010 | 7MCW8-VRQVK-G677T-PDJCM-Q8TCP |
Visio Standard 2010 | 767HD-QGMWX-8QTDB-9G3R2-KHFGJ |