Hello Mechatronix Solutions,  Since this is your business, you can add the information based upon your personal knowledge.  When you say the source is Google Maps, that indicates that you copied or verified the information using Google Maps, which isn't allowed.  So, just enter the information based on your knowledge, and for the source, enter "local knowledge" or "this is my business" or "I work at this business. "  With what exactly are you having difficulty changing?  What did you try, and what happened?