Resources posted via api response id 0 [solved]

Hey,

i am new to DreamFactory and i have a problem with the API. Testing out the API and posting new entries to a tables called hosts results in a 200 with a response that contains an id of 0.

We are using DreamFactory 2.8.1. The Server runs CentOS, MySQL 5.6, Apache.

Do you have any clue what could go wrong? All i read pointed out that the response should contain the IDs of the newly created entries.

Thanks for taking the time.
Stefan