There are two different ways to Generate Serial Numbers manually.
- Add Serial Number
- Generator Rules
Add Serial Numbers:
You can find the option on top of the Serial Number table. If you click on the option, it will redirect you to the following interface.
Under the Add Serial Number section, you will find the following window to select your product, create serial numbers, and add other important information with the serial number.

First of all, you need to select the product to enable serial number for it. Secondly, insert your desired serial key in the Serial Number field. Here you can add any combination of numbers and/or letters. Most importantly, WooCommerce Serial Numbers allows you to input multiple lines as your license key.

After that, you need to deal with the “Activation Limit”. Though this field is mostly applicable for software and games licenses. If you want to restrict the activation to a single user then enter 1 here. Likewise to allow multiple activations you can enter any number. We recommend to leave it blank if the product is not any software or game.

Next comes the “Validity” option. This field takes days as input and it is how long the license will be valid after customers purchase them. Finally, you have the “Expire date”. Select a date from the pop-up calendar. After this date, the license will expire and they will not be assigned with an order. Congratulation you have successfully created your first serial number/license keys. The first two fields are mandatory.

Generator Rules
The Generator allows you to create bulk serial numbers in a specific pattern. This is a premium feature so you need to have the premium version of WooCommerce installed and active. Find the Generator menu option on the dashboard. Let’s walk you through with all the steps associated with the license generator rules.

First of all, you need to add a Generator Rule to create multiple serial keys with a single click.

Clicking on the Add Generator Rule will lead you to the following interface:

First of all, you have to select a product to get started. All the products will be available in the drop-down including the variation products. The second option is to provide a pattern to generate serial numbers. There you can add something like Serial-######. You also have the option to add the year, month, and date with your generation rule by adding {Y}, {m}, and {d}. The third option is to select the type. Here you have to select either “Random” or “Sequential” order for the rule. The sequential order will replace the # with sequential numbers and the random order will replace the # with random alphanumerics. The first three fields are mandatory.

Next comes the “Activation Limit”. Though this field is mostly applicable for software and game licenses. If you want to restrict the activation to a single user then enter 1 here. Likewise to allow multiple activations you can enter any number. We recommend to leave it blank if the product is not any software or game. Then comes the “Validity”. This field takes days as input so if in case you want your serial numbers/license keys to be valid for one year then you have to enter 365 days.
You should note that the count of days will start from the purchase date. Finally, you have the “Expire date”. You have to select a date from the pop-up calendar section. Once the serial numbers are expired they will not be assigned with an order.
