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Hello @Bala Subrahamanyam,
It appears that you are trying to activate Office using Activation Wizard and you would like to have a confirmation ID while activate by telephone.
Please help me try those step below to activate your Microsoft Office:
- In the Activation Wizard, select "I want to activate the software by telephone", then click Next (or press Enter on keyboard).
- Under Step 1, select your country or region and call the Product Activation Center phone number displayed for that location.
- When prompted, provide the Installation ID shown under Step 2 of the Activation Wizard.
- The Product Activation Center will provide a Confirmation ID. Enter this ID under Step 3 of the Activation Wizard.
- Select Next and follow the on-screen instructions to complete the activation. If Next does not respond, press Enter on your keyboard.
If you have any issue while activate, you can refer to this article to contact to the support team directly: "Telephone activation is no longer supported for your product" error when activating Office
If you have any further concern, please feel free to let me know.