Field help (PFICCE1) 

These are the analytical dimensions intialized based on the setup of the Default dimensions (PIV dimension code), linked to the invoicing elements management. These dimension codes can be modified manually if authorized by the transaction. Use the Actions icon to change the dimension codes of the dimension types.

When an analytical dimension is used for project management tracking, any modification of the project code on the document header leads to the dimension code being reset, except if a distribution key has been entered.