- Go to the Revenue Section of Altru
- Click on Blackbaud Payment Service Merchant Accounts under Configuration
- Click on the double green arrows next to the CyberSource Merchant Account
- Click Edit
- In the Edit Merchant Account Screen near the bottom there is an Additional Fields tab. Click on that.
- Here you should see your Security Key in the Value field
- Click on the edit Icon and paste your new Security key in
- Click Save
- Click Save again to close the window
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