Create Tenant ID / API Key
To obtain Tenant ID / API Key for the registered account, perform the following steps.
To obtain Tenant ID / API Key:
- In the application page, select GROUPS & SETTINGS from the left panel.
- The Groups & Settings page appears. 
Groups & Settings page
- On the Group & Settings > All Settings > Systems > Advanced > API > REST API .
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Make sure that the Enable API Access field should be ENABLED .
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- In the REST API page, The Tenant ID / API Key details will be listed in the API Key column.
- To get new Tenant ID / API Key, click Add .
- Provide a service name, description to describe your API, choose the account type you wish to set, and then click Save . The Tenant ID / API Key will then be listed in the API Key column. 
Click Add