When i am opening some IMG configuration , i am getting following 3 caution messages -" The table is cross-client, Do not make any changes (SAP data),Changes to Repository or cross-client Customizing are not permitted ". then the IMG node opened in display mode. No changes are permitted in this IMG configuration node. Can anyone illustrate me when the above situation arises. What could be the reason and what exactly these messages infer. Thanks in advance.