As you know we have already opened many files and have repeated few time how to operate.
Receipt
Tax invoice, job, invoice
Local creditors
Invoice from vendors must have at least the purchase order.
Local debtors
Invoice to local customers whose having credit term attached with copy of job sheet
Overseas debtors
Invoice to overseas agents attached with copy of job sheet
Overseas creditors
Invoice from overseas attached with copy of job sheet
Please read and keep for your record. I will not repeat.