What are the documents required for consolidating debts?
Are you talking about a debt consolidation loan or a program?
A debt consolidation program is a better option since your credit score won't play any role there. Yes, the debt counselors will ask about your income. But they need that to create an affordable repayment plan for you.
Check this page:
You'll get a list of reliable consolidation companies.
I think you should follow what "ditchdebt" suggested earlier. It is clear that you are looking for a debt consolidation loan. Like any other loans lenders will definitely check out your creditworthiness.