wrong resolver offset value

i'am not sure what you mwean
Wobj Data you can find here
PERS wobjdata WobjSTN1 :=[ xxxxxxxxxxx

resolver offset value.... (maybe you mean Calibration offset)..... you find in the moc.cfg file
#
MOTOR_CALIB:
-name "pos1_1" -valid_com_offset -cal_offset 2.8183 -valid_cal_offset \
-latest_calibration_method 1

It might not be taught yet.

It will still work even if it has not been taught.

you can test it when you move in Workobject mode:

move the robot to the Mounting Plate on STN1 and rotate it

the robot must be in workobject mode

Have you searched here for the manual which will tell you the proper calibration of that positioner?

Manuals, Software and Tools for ABB Robots

Check data all the modules, perhaps it was in a different module when the wobj was defined.
I seem to remember that happening to me a long time ago.

you are realy sure you have only one WobjSTN1?

you can find the data in the moc.cfg file

#
SINGLE:

-name "STN1" -use_single_type "STN1" -use_joint "PLATE1"\
-base_frame_pos_x 1.36493 -base_frame_pos_y 0.993543\
-base_frame_pos_z 0.218675 -base_frame_orient_u0 0.499241\
-base_frame_orient_u1 0.499043 -base_frame_orient_u2 -0.500491\
-base_frame_orient_u3 0.501222 -use_single_jog "STN1"