Before sending a REST request to the API, you get an
OSTOKEN as follows:
Then set the
OSTOKEN in the HTTP header
X-Auth-Token to authenticate a REST request.
TTL token limit: The OSTOKEN issued by Open Telekom Cloud has a default TTL of 24 hours. However, the Cloud Topology Designer only accept the OSTOKEN in the API requests with the TTL of 30 minutes to prevent a stolen token.