Here you can select if a manufacturing order row belongs to a certain project. You can use the PopUp feature or F4 to select an existing project number already linked to a manufacturing order and to which this manufacturing order row should be linked. By using F3 you can select a manufacturing order project that does not have a linked manufacturing order and that is created at the same time as another project in the Register Project procedure in the Accounting module.
The purpose with project on manufacturing order rows is to be able to register several manufacturing orders that concern different projects.