External current transformer at MultiPlus-II with External Transfer Switch

Hello Community,

I set up a 3-phase MultiPlus-II system with External Transfer Switch.
So far there are two issues I need to discuss - maybe I am stuck with my problem and would be glad for input.

Link to the manual I used to wire an config my system: Link

First the external current Transformer:

There is no current displayed, ether in VRM nor in VEConfigure. I used a 100A:50mA CT from Victron. When I measure the secondary current with a Currenclampmeter with the CT wired to the MP II, the measurement ist correct up to the MP II units.
In addition I once accidentally produced error 24 wich translates to:

Error 24 is raised when a Multi or Quattro detects current flowing through the back-feed relay during a period when the relay should be open

In my case this only happened as I cut the MP II out of the control over relay K2.

Is it normal that there is no current displayed?

The wiring is in my opinion correct, unfortunately the image is not as good as it should be (first Image).
It is done like shown in the second image (not from my installation)

I also checked the Grid-measure in ESS to Inveter not to extern.

Thank you for your feedback - if additional information is needed, feel free to ask.

Best regards

Simon