There are commands for deleting errors in different objects in the system (axes, kinematics system itself), like mentioned in the first link I shared in my last comment.
To do a kind of "clear all" there are in my opinion two ways to do so:
The ImcCtrl.Admin.ClearError (only useable when ctrlX MOTION is installed)
The address "diagnosis/confirm/all-errors" on the Data Layer (that is triggered above) can also be written by hand via DL_WriteNode.
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