Invoice and Bills - Include mandatory Reference Number Field
Currently you can add a bill / invoice without adding a invoice number or just typing a word or anything - example our debtors lady invoiced (Receivable invoice) a client and overwrited the invoice number (reference) to "Diesel R/Bay" so the invoice had no invoice number
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Dhaval Kothi commented
How to make any particular non-mandatory field in an Invoice change to mandatory.
I want to make the Item Code field & Reference Field Mandatory.