My boss gave me a task in which I should create an application using a specific table in our system, let's call it table1, the problem is, table1 is not compatible with table2 which is the table used by my app(and there's only one suited for such task), he noticed his mistake and told me to use table3, but table3 uses character format as primary key and table2 uses integer format for table3's foreign key, I reported it to my boss, however, instead of helping me, he told me to send an email to the guy who knows about that table, but the guy is in one of our customer's factories and won't be back for a week. Therefore, I'm working on other less important things because I'm depending on that table, it's been 2 days and the guy hasn't replied yet. What should I do?
P.S.: I may neither change the table's properties nor create a new one.