Persistence postgresql error: Persistence service not modifiable ‘jdbc’

I’ve setup the persistence service with jdbc and postgresql. The db user has all the permissions thinkable. But when I try to create an new item state with the “openHAB REST API” it returns the following error:

Persistence service not modifiable ‘jdbc’.

Fixed it by correcting the persistence file rules.

Hi Kees, care to share how you changed persistence file rules ?
I’m running into the same issue.
Thanks !