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You can enter the number and date of the incoming document on which this document is based, in the In. Doc. # and From fields, respectively. If the invoice is based on a customer order or other document, the values are filled in automatically. If the CRM module is enabled, you can select a Lead in the In.Doc.# field.
In the Shipper field, you can specify the company who ships the items. If such company is not specified in the document, then the customer details will be used. The value will be used in the Packing List print form.
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