I have activated my other GCs but now when I activate GC 006, why the system does not accept my request?

GMI always believes in fair dealing with its customers and does not encourage customers to invest their hard earnings by activating the GC Headers unnecessarily, GC 006 could only be activated once your Till Date income reaches US $50,000 now on you can activate all other GC headers till GC 10 but when you try to activate GC Header 11 you must have reached Till date earnings of US $100,000.