> For the complete documentation index, see [llms.txt](https://learn.erpag.com/project/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.erpag.com/project/create-new-product-1/untitled-4/basic-definition/minimum-purchase-quantity/serial-numbers.md).

# Serial numbers

To add serial numbers to the products in ERPAG, do the following steps:

 1\. Your beginning inventory for those products should be 0.

2\. Your products need to be set that they are tracked by a serial number.

![](/files/-LPkQW6bViQ7P5Shz6_c)

![](/files/-LPkQcBg2K2bz_85OTvL)

 3\. Go to inventory > stock adjustment > create > import data > beginning inventory. 

![](/files/-LPkR4zp9cuKmxwk2T5c)

\
 4\. Just copy/paste the columns from your xls to ERPAG. 

![](/files/-LPkRNjSnHlJQcbQQot7)

5\. Save the changes and do the stock adjustment, and the serial numbers will be added to your inventory.