How to default Random number value on "Serail number" field?

Summary:

The requirement is for the Item with Serial number "Dynamic Enty at Receipt", we want to extend VB REDWOOD page to populate Serail number field value uisng RANDOM number function.

Is this feasible?

Serial Number is a field on Miscellaneous transaction form. Can we extend the Field value to have a rule that generated RANDOM number instead of user entering Serial number manually

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