Purchase order validation

 Hello

We are facing the issue when someone wrongly entered GL account in item master for expense item.We need to stop this type of wrong entry on PO and validation required from the PRESIDENT APPROVAL LIMIT.

The requirement is user create purchase order and select expense item,the distribution of expense item is to be matched to the PRESIDENT approval limit(account range) where all the gl account for expense item is defined .If the distribution of item is exist in president approval limit,then go forward.Otherwise it should be stop here.

Please provide the suggestion..i think it can be achieved through form personalization..screenshot required.