Field help (PRJ1GCF) 

Company group code, site or company or project definition site group. The assignment of a project to a site or company group is authorized only if all the companies of the group use the same currency.

Depending on the information that has been entered, the numbering of projects can vary - if the assignment of counters does plan different counters per company. For this reason, the modifiction of this field is forbidden after the creation of the project. If there is an error, the user has to delete the project and create a new one with the right definition level (Site or company group, site or company).