Hi Sunil
Have you tried using a focus on the button then, instead of a mouse click, trying using a global send keys event to press enter. {ENTER} this might work better than a mouse click, if that doesnt work try re-spying the element with a different spy type. Can you tell us what application you are using? I've seen this before in SAP and the pop up window is preventing the response back to blue prism that the press action is complete.
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Michael ONeil
Technical Lead developer
NTTData
Europe/London
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