Auto-numbering for new records based on the Category

[Venkat1231]

Hi folks,

Requirement: I have two fields in the form.

1. Category - List Type (Choices ike Hardware, Software)

2. Number - String (Should be auto numbered)

If I select Hardware, auto number should be like HARD0001

If I select Software, auto number should be like SOFT0001

Regards,

Venkat.