Dear community,
I am trying to use the Microsoft groups HTTP request action in order to create a new Planner plan (whereas instead of "XXXXX", I have inserted the group ID I want the plan to be created in):

But whenever I do this, I get the following 400 response:
{
"error": {
"code": "",
"message": "Invalid id",
"innerError": {
...
}
}
}
Unfortunately, I can not find out, what this means. Does it mean I have the wrong group ID? I extracted the group ID from a link to my MS Teams team. Is this the wrong way to determine the group ID?
Thanks for your help and best regards
DaniCalifornia