Dear All,
My company have recently become a Dynamics 365 Business central partner.
One of our new customers wanted to reverse a posted sales credit memo. So we explained after testing in the Cronus UK Ltd system that you go into the actual posted sales credit memo and click the Action button and use the cancel button as screenshot below. (this is from Cronus UK Ltd system) :-

However when we go onto the customers live data they don't have that one function called Cancel as per screenshot below.

I have checked by logging on as business manager and accountant but still no cancel option. I cannot see any system options that relate to this particular setting. So I am not sure where to look next.
So any help would be greatly appreciated.
Kind regards,
Kelly