Warning about tendons


I get this warning about some tendons that i have difined, i cant really get the point of this warning

If anyone can help ?

+++++ warning no. 401 in program GSREIB_REIB
Tendon 2501 1st stressing point has no effect due to overstress from 2nd side!

You should stress from only side. There is no point of stressing from both sides.

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Like Tomaz said, there is no point stressing from both sides.
The friction losses due slip (when wedging) carry past half the tendon.
So stressing from the other side just mirrors the cable force.
E.g. After first stressing from right red and after second stressing from left blue:

You probably have relatively short tendons.