Portal
In Portal the parameter 'ex_input_ro_cc' can be enabled to remove the ability to select a different Cost Centre.
Go to the Administrator Dashboard and click the Site Manager tab.
Open the Admin Settings option.
Search for the parameter ex_input_ro_cc.
Expand the 3-dot menu and click Edit.
Update to Y and click OK.
Back Office
In Back Office, the setting Cost Centre Pop Up List can be disabled to remove the ability to select a different Cost Centre.
Go to Back Office, Core Expense, Reference S-Z, System Parameters, ESS Params.
Untick Cost Centre Pop Up List.
Click Save.
