We must make some settings for this process...
Click Admin - Custom Definitions - Custom Settings. Invoice settins > General Invoice must be checked "Import Stock data when printing invoice".
After that step, when we are creating a new invoice we must add a new fields This fields are;
add a data field;
click ... button and
Choose Table.Invoice Report - Info of invoice stock
after this step, click ... button from field option.
Choose Explanation 1 all settings are done for this process..
Save and close this page, print or preview your design at Invoice
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