The phrase "a cumbersome process that" is correct and usable in written English.
It can be used to describe a process that is complicated, difficult, or unwieldy in nature.
Example: "Filing taxes can be a cumbersome process that requires extensive documentation and careful attention to detail."
Alternatives: "an unwieldy procedure that" or "a complicated method that".
Seeking approval is a cumbersome process that could delay studies for months.
But sales tax increases can be passed only in a cumbersome process that requires both local and state approval.
Pumping is often a cumbersome process that involves lugging a bag of equipment to a private space near an electrical outlet and getting partially undressed.
On that trip, he tried a cumbersome process that required snapping pictures in different directions and stitching them together later in a photo-editing program.
Administration and law enforcement officials said the legislation would set up a cumbersome process that would rob them of opportunities to obtain timely intelligence.
The previous method consisted of giving patients transfusions of red blood cells, a cumbersome process that can take as long as four hours.
Before we moved to Continuous Delivery, releasing to production was a slow, cumbersome process that involved a round of regression testing, collating a list of all the changes and a 12 step semi-automated process performed by a team who weren't involved in making those changes.
The company says reducing its German payroll is a costly and cumbersome process that can often require setting up a separate new company filled with laid-off employees who spend a year looking for new jobs at their full salaries.
FOR many high school seniors and their parents, this is the season for tackling the Free Application for Federal Student Aid, a notoriously cumbersome process that the government is trying to streamline this year.
It's a hugely cumbersome process that most people in emerging markets are forced to undertake.
But if Germany is convinced otherwise and other member states follow its lead, it may be impossible to move ahead without tinkering with the fundamental law, a trying and cumbersome process that depending on how it is done, can take 18 months or more.
