Is there a way to import a Bamboo Spec file via the REST API?

[Anayt Korai]

I currently try to automate the process of creating a new Bamboo linked repository and start the scan. I've already looked over the documentation of the REST API, tried to generate a new plan and enabling a scan, but that didn't work.

I also tried the Java Maven Package from Atlassian, but that needs user credentials as an authentication method, whilst I need to authenticate via a Security token. There is a link to an API in that Maven Package, which I tried to send a request to with the yaml code, but it always responds with the status code 500 and a Java Stacktrace. It's probably due to a wrong request body, but I can't figure out, how to include the yaml content the same way, as the maven package.

Is there a way to create a linked repository via the REST API?

Thanks in advance!