Uploading Your Key Pair {#uc-upload-key}
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When you have generated your encryption key pairs, you can upload your key to the `Unified Checkout` platform. Keys can be loaded at any hierarchy that is enabled for them and are used for all child entities that do not have keys loaded. You can upload a key at parent and child levels, but child keys override parent keys.  
Follow these steps to upload your key pair:

1. Log in to the `Business Center`:  
   Test URL: ` `<https://businesscentertest.cybersource.com/ebc2>` `{#uc-upload-key_ebc-test-cybs}  
   Production URL: ` `<https://businesscenter.cybersource.com>` `{#uc-upload-key_ebc-prod-cybs}  
   If you are unable to access this page, contact your sales representative. {#uc-upload-key_step-1}
   {#uc-upload-key_step-1}
2. In the `Business Center`, go to the left navigation panel and choose Payment Configuration \&gt; Key Management. The Key Management page appears.{#uc-upload-key_step-2}
   {#uc-upload-key_step-2}
3. Click +Generate key. The Create Key page appears.
4. On the Create Key page, select Token Management MLE.
5. Click Generate key.
6. Enter your MLE public key value in JWK format.
7. Click Create key.
8. On the Key Management page, search for your key and select it.
9. Click Activate. Your key is now active.
   {#uc-upload-key_steps_nf4_qht_hjc}