I'm unable to fill any values into a custom jira-multi-select field in Jira via Api.
The confusiing part is, that I can fill a jira-multi-select if I use a Systemfield of jira and no Custom Field.
The Api responds with no error Code and the field stays empty.
I tried this using Postman and it Works with the System Field but not with Custom Fields.
Does anyone have an idea why?
