New to Okuma LT need help with alarm

I'm trying to do a part transfer with the sub spindle

Before the transfer my B turret is cutting in the sub spindle and the A turret is cutting in the main spindle.

I need to make my B turret go back to a main spindle mode (G140) so that my A turret can control the W axis.

--when I put G140 in the B side program I get an alarm that says "Change timing g140/g141/g142

If I don't put the g140 in then it alarms on the a side at the first w-move.

Any help with how to put the Lower/b turret into main spindle mode would be very helpful.

I think it's a sync or timing thing but I'm stuck

Thanks
Nick