Accidentally Shared Candidate Salary Details with Wrong Manager – How Can I Fix This?

I require help. I mistakenly included a senior employee from another department in an email containing offer details of a candidate for a different department. That senior employee has requested additional salary details, which I cannot share with her. Due to this, my manager is understandably upset with me, as I made a mistake.

Please advise on how I can resolve this situation or what I should write back. The senior employee will be the indirect reporting manager for this recruited candidate.

For better understanding, the email is enclosed:

From: Senior Employee
Sent: 29 December 2015 14:42
To: Me; Department Manager
Cc: Head HR, My Manager
Subject: RE: Designation-Location

Dear Manita,

I think his salary expectations are not commensurate with his experience and ability, especially considering that he will be based out of Jodhpur. Ideally, this should be closed at around 50,000/-. Please advise on some of the other salaries that we are paying to our team, both in soft and hard home. We should make an informed final offer to him based on that.

Regards,
Other Department Manager

________________________________________

From: Me
Sent: 29-12-2015 12:06
To: 'Department Manager
Cc: Head HR, Other Department Manager'; My Manager
Subject: RE: Designation-Location

Dear Sir,

Please find enclosed details and suggested offer for XXXXXX, the shortlisted candidate for XXXXXXXXX.

Name | Current Salary | Expected Salary | Total Experience | Qualification | Proposed Baseline | Proposed Band | Designation

Regards,
Manita

Regards,
Manita

Please issue an apology for inaccurately addressing the mail to the sender and requesting complete secrecy. The best way to deal with such a situation is to confide in the person and take them into confidence. Work as a team to maintain confidentiality and avoid every such slip-up in the future. Hope this works.