The unique number parameter is used to generate unique numbers across all of the users. The unique number is generated from 16121217 and sequentially 1 is added.

### Adding Unique Number Parameter

There are the following fields that need to be filled to add a Unique Number Parameter:

- Parameter Name : This field is used to define the name of the variable associated with the current parameter. Valid parameter name can have only the alphabets and _.
- Minimum Length : If the user wants to specify the minimum length of the number generated or the minimum number of digits, he/she can specify it here.

### Update value on :

This field is used to indicate Load Test when to generate a new number i.e. generate once and use this value for the entire session, or, generate a number every time Unique Number Parameter is used. Users can have the following options:

- Session : Unique Range is generated only for the first use of the Unique Range Parameter. Then for the entire script, the same value is used.
- Use : Unique Range is generated for each use of the Unique Range Parameter. For example, if the user uses this 50 times in the script, then for every reference, a new Unique Range is generated.

Sample Output : It will show some sample output of that parameter according to the fields filled above.