"Insufficient permissions" while saving changes to semantic model via TOM (Tabular Object Model)

Hi Anonymous ,

Check with your Power BI / Fabric Administrator whether new security or governance policies were applied recently.
If you’re using service principals or automation to save semantic models, new consent and security checks may now block saving unless explicitly approved in the tenant settings.
Check in the Power BI Admin Portal if you have access:
Go to Admin Portal > Tenant settings > Export and sharing settings
Look under: “Publish datasets”, “Allow semantic model editing”, etc.
Create or edit a new test model in the same workspace. If that works, the issue is likely dataset-specific permission or ownership, not workspace-wide.

If our response addressed, please mark it as Accept as solution and click Yes if you found it helpful.

Regards,
Chaithra.