BEx Transport request xxxxxxx is not available

While editing or saving a query on Query Designer, you experience the error below


Open a query with Query Designer
Edit the query 
Save the query

Error: BEx Transport request 'xxxxxxx' is not available or not suitable
Error: Request/task xxxxxxx does not exist



Solution:

Access follow the process below:

Access transaction RSA1
Click on Transport Connection
Click on BEx button (Shift + Ctrl + 0)
Click on Assing/Delete
Select a new transport request (you can create a new one).

 After this process, the issue will be solved.