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Changing the Customer (Debtor) on a cost option is useful for when you need to generate a second invoice to a different customer.
For example: On an Job booked by another agent, you may invoice both the agent and the transferee. In order to handle this, you can change the customer associated with the option (the agent) to the transferee (if available) or to a general COD customer.
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How to Change the Customer on a Specific Cost Option:
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