Fanuc apc 307 alarm battery replacement

Hello there

I am getting 307 apc alarm on my Fanuc 16im control.

The apc alarm is for both x and y axis.

Since my machine has pallet changer as well, I had a pallet axis servo alarm , which according with the technician who was here last time , if the palett servo axis servo alarm shows again , means I need to replace the battery related to that servo as well.

Could someone help me please?