https://api.personio.de/v2/persons and global_id in custom

When I'm using the v2 of the persons endpoint, the example says that in the field global_id the name will be shown. Like:

{  
  "id": "dynamic_306",  
  "type": "string",  
  "value": "DExx-xxff-ss-os02",  
  "global_id": "IBAN"  
}

But what I get is

{
  "global_id": "11391998",
  "id": "dynamic_6616469756aa56.01247989",
  "type": "string",
  "value": "232200"
},

So it's not what the documentation says. Seems that I have to do another API Call to a v1 endpoint to lookup global_id- so what is correct? And how to get the speaking name for global_id

Discussions

https://api.personio.de/v2/persons and global_id in custom_attributes