Routing type does not correspond to order cat. due to routing application

What causes this issue?

Each <GL:task_list_type>task list type</> is assigned internally to a
task list application. The task list application refers to an
<GL:order_category>order category</>. This means that every task list
type is assigned to an order category.
The task list type that you entered is not assigned to the order
category that you are currently using.

How to fix this error?

Select a task list type that is assigned to the current order category.

Error message extract from SAP system. Copyright SAP SE.