Re: cannot find the field of company in manual customer invoice

Sure there is a way.

1. Open the CI screen and go to Adaptation Mode. ("Adapt" option on the top contextual menu).
2. Go to "Edit screen" by clicking on the same "Adapt" option.
3. Click on Extension Fields and you will see "General" section group enabled for Extension.
4. Click on General and then on "Add".
5. Set the new field as Calculated Extension field by enabling the indicator.
6. And then set the rule as "Party ID - Seller Party".
7. Save and Publish changes.

BINGO !!!