KSS version?
What type of external axis? Is the robot mounted to the axis, or not?
Is the axis kinematically integrated?
KSS 8.3
yes
yes
This message indicates that your splines aro so long that there is not enough free memory to store it. Usually it helps to split the spline block in smaller parts using blending.
Fubini
Is it possible to increase the size of this memory? I would not want to break up movement...