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This section covers a SOAP-integration. The REST/JSON API is similar and you might have a look into Swagger and the Postman Sample. As written in the API Documentation, you have to access API calls with an authorization information. The following code shows a api token authorization.
<authorization> <apiToken >hizit4enf8ellb6b5h12345bgt8mzf1abcedf27jys91hetvesabcd9fdb312348bk</apiToken > </authorization>
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