It is showing like this
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from the record view link, is it working? Record title should be single expression so you have to use concat operator to concate two value to show as a title.
Hi Deepak gupta just out of curiosity I tried to regenerate the issue I think the error is not because of this.
Oh, I learn a new thing, I am so sorry, i thought it should be a single expression only. Thank you so much.