Field help (CHXPJM1) 

 Analytical dimension codes are created automatically for new cost types, for dimension types flagged as 'Cost type', if parameter PCCAUTCRE-Create cost type dimension (chapter TC, group PJM) is set to 'Always' (if various conditions have been met). If PCCAUTCRE is set to to 'Confirmation', you must choose whether or not to create the dimension code.