Create Build over REST API fails - BuildID must be set to NULL

Dear Spira Team,

I want to create a build using the REST API via postman. The json body looks like

{

    "BuildId":24,

    "BuildStatusId":2,

    "ProjectId":9,

    "ReleaseId":556,

    "Name":"Rechnungssuche #24"

}

I get an 400 Bad Request and the error message

"Vor der Erstellung eines Build Objekts muss seine BuildId auf Null gesetzt werden."

English: before you create a build object, its BuildId must be set to NULL.

Where is my mistake?

Kind regards,

Cornelia