Prefix
When defining an Invoice Number Format, you have the option of specifying a fixed text string that will prefix your invoice number.
For example, you may be interested in an invoice number that looked like:
MyCo-00001
MyCo-00002
MyCo-00003
etc.
In this case, you could include a value of MyCo- in the Prefix field so that it would always appear in conjunction with your invoice numbers.
The Prefix field is optional and may include any alphanumeric values to a maximum width of 25 characters.