In Detrack, every job must be created with a D.O. No. (reference to your delivery job).
This feature is for the systems to automatically generate the D.O. No. for your jobs, instead of manually providing it.
The auto generated D.O. No. will start with a pre-fix of DET, e.g. DET13652364.
Steps
Navigate to Settings > Job > Options.
Enable Auto generate D.O. No. > Save.
Note
This feature will result in the D.O. No. field to be hidden in the Job Form.
When performing an import of CSV / Excel file for job creation, the D.O. No. column may be omitted.
If a value is found to exist under the D.O. No. column, this value will be used for the job.