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Sid LightningSid Lightning 

Lightning Button/Action to call an Apex Webservice method


I want to update details on account, which further should update in external system. 

We have an API already made, which updates through a backend event. However, I want to create a custom lightning button on Accounts , which should call that method and hence update the call.

Can someone tell, how is this achievable?
Sid LightningSid Lightning
Can anyoone help me on this