The interface with #SAP is using the "ClientCode" as the campaign on the client side.
This field is not being set as mandatory when creating a new Project, which is generating integration problems.
Prevent Future Issues
Go to the user form and:
- Add the role "ProjectSave"
Go to the Maintenance tab and:
- Enable the setting "Project Client Code required"
- Go to the client module.
- Create a new Project.
- Verify that the field Client Code appears and required.