Auto number field automatically generates a values based on given Witly script. Witly will evaluate script and assign a value to the auto number field when the record is created. If you add the auto number field to a module which its records have already been added, the existing records will not have a value assigned.

To create the auto number field:

1. On the module detail screen, click Create Field.
2. Name your field.
3. Select Data Type as AutoNumber, the Data Format will be displayed.

4. Specify Data Format: Enter ${yy:Date.Now}${RunningNo.Year.Next}. The system will automatically create the number by counting the existing records.
5. Select field attribute.
6. Click Save to create the auto number field.

Note: Field type auto number will be automatically set to read only.