I have created a URL hacking to populate contract agreement name and account name(through contract agreement) on contract product. For some reasons account name field is showing an error 'Error: Multiple items found. Select from drop-down or click icon to refine search' and is also pulling wrong account name.
Relationship Account is parent to Contract Agreement(Lookup relationship) and contract agreement is parent to contract product(Lookup relationship)
URL hack formula
/a3L/e?CF00N4O000006wG7O={!Contract_Agreement__c.Name}
&CF00N4O000006wG7O_lkid={!Contract_Agreement__c.Id}
&CF00N4O000006wG7N={!Contract_Agreement__c.Account__c}
&00N4O000006wG7N_lkid={!Contract_Agreement__c.AccountId__c}
&retURL=%2F{!Contract_Agreement__c.Id}
CF
part of the keyprefix on line 4?