Prestressing tendons

Please, How I can solve this problem?

Same problem/solution as in this thread:

OK. Your reply regarding the second problem.
Can you help me to solve the first problem which is that the slip will reach the opposite end?
Thank you

It’s the same problem/warning on a theoretical level.

Your cable is too short to stress from both sides.
Stress each cable from one side only.

Regarding the slip:
It might be the same warning (i.e. might disappear with one-sided stressing).
Otherwise it’s your geometry.
Post a file, otherwise it’s just guesswork.