Error adding O365 user group

[Snow]

I get the follow duplicate error when adding a user group to my app even though the user group is not listed as a user!

{"devError":"Cannot create team for undefined.","statusCode":400,"contentId":1,"body":"{\"error\":{\"code\":\"0x8004022a\",\"message\":\"Duplicate record exists. Cannot insert duplicate key row in object 'dbo.TeamBase' with unique index 'ndx_TeamName_BusinessUnitId'. The duplicate key value is <redacted>.\"}}"}

[aboehm]

I get the same error in a flow when I try to start an approval with a mail-enabled security group:

BadRequest. Fehler bei Anforderung. Fehlercode: "XrmApiRequestFailed". Fehlermeldung: "Fehler bei XRM-API-Anforderung: "Message: Duplicate record exists. Cannot insert duplicate key row in object 'dbo.TeamBase' with unique index 'ndx_TeamName_BusinessUnitId'. The duplicate key value is <redacted>. Code: 0x8004022a InnerError: ".".

[Kevin_Centric]

@aboehm We're getting the same error when trying to send approvals to a mail enabled O365 group. Did you ever find a solution/explanation for this problem? 

[aboehm]

@Kevin_Centric Unfortunately no, I had not found any solution nor any explanation for this issue. Instead I created a workaround by allowing multiple "assignedTo" addresses for the approvals in my flow, so there was no longer a need for the mail-enabled security group.

It isn't ideal because theses addresses come from a single SharePoint column, which i can't restrict to only "usable" addresses. So some users may enter data which let the flow just explode instead of displaying a message to the user in an expectable error condition.