> 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.

![](https://2317124154-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LILjUcr8nMnodgs_gyz%2F-LPkPsZMqB_rF21QxNPu%2F-LPkQW6bViQ7P5Shz6_c%2Fsn1.jpg?alt=media\&token=df209b07-f810-4594-9026-d58c8ffbc8a5)

![](https://2317124154-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LILjUcr8nMnodgs_gyz%2F-LPkPsZMqB_rF21QxNPu%2F-LPkQcBg2K2bz_85OTvL%2Fsn2.png?alt=media\&token=60477df3-d505-4ef8-b702-d18fea2c5ecf)

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

![](https://2317124154-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LILjUcr8nMnodgs_gyz%2F-LPkPsZMqB_rF21QxNPu%2F-LPkR4zp9cuKmxwk2T5c%2Fsn3.jpg?alt=media\&token=9082bef3-b3a5-4474-81ae-374b53b3f94d)

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

![](https://2317124154-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LILjUcr8nMnodgs_gyz%2F-LPkPsZMqB_rF21QxNPu%2F-LPkRNjSnHlJQcbQQot7%2Fsn4.jpg?alt=media\&token=2791e82d-661c-43ae-a2f8-5a31046fa067)

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