It is very important to keep records of all sales activity that goes on throughout your business. Having a record of this is one way that you can be sure that you are accounting for everything properly. It is something that allows you to sit back and relax a little more as you know that you are going to be just fine.
Your Excel sales invoice program is the best way to keep track of all of this information. By using a program like this, you are able to show that you can maintain certain levels of sales by doing various things. Thus, it is a great program to keep around.