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Azure partition refresh issue

Hi all,
I am refreshing ds partitions via Azur runbooks and powershell scripts. This week I noticed that the error below appears (previously everything worked fine)


This is the line that its calling:



And the connection string:

$connectionString ="Provider=MSOLAP;Data Source=$XmlaEndpoint;User ID=app:$PowerBIServiceApplicationID;Password=$PowerBIServiceApplicationKey;Persist Security Info=True;Impersonation Level=Impersonate"


Do you have any suggestions why suddenly this script stoped working a week ago?


Thanks in advance!


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