Field help (DIEPRJMGT) 

Use this check box to manage and determine the default value of the Carry forward field defined at the dimension code level.

Select this check box if the Carry forward field on the dimensions attached to this analytical dimension type cannot be selected or edited.

Leave this check box clear if the Carry forward field on the dimensions attached to this analytical dimension type must be available for entry.

When the fiscal year end process is run, if the Carry forward field is selected on a dimension code, the balance for the dimension code is carried forward for the accounts for entries from this dimension as long as these accounts are also linked to an account class where Carry forward is selected. All the entries from a dimension can be carried forward from one fiscal year to the next.