The error code simply means command refused. The detail error tells you, that the number you are commanding is bigger than the maximum number insertable.
Please send 16 double values as position. At the moment you have to do so.
Actually there are no position limits but the firmware needs 16 initialized values otherwise it tries to use undefined values for commanding. The error message also tells you that not the limit is exceeded but the number it self used is bigger than it could be.
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