Hello Kavita,
Thanks for your response.
Business only give me the requirement for restricting the access for the this field. So reverting back to business on this doesn't make sense.
Being a security administrator I should be able to get back to them with a solution Image may be NSFW.
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Since the field is not available in authorization fields, I am not sure how we can acheive it!! Image may be NSFW.
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Jacob