Is there any time limit for completing cma?

Hi, i want to know if there is any time limit for completing CMA. There is no such limit in CA, but i am not sure about CMA. The registration validity for both inter and final is 7 years, then there is denovo registration and a second time denovo registration if you have completed 1 group or availed exemption in 2 papers. But what next? If you can't get through the course after this, can you register again and complete your CMA?