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Split from Unified UMC Problem.

I've solved the problem by configuring the credential on the Tia Administrator Panel.

Log-in -> Central User Management

Here you have to specify (in order):

1. Select Agent option as operating Mode
2. the name of your machine where UMC Server is running
3. Click on Validate button
4. Approve the Server ID given (in case of error check connectivity and network configuration)
5. Use your UM Administrator user you should create on UMC Server installation phase
6. Click on Approve button
7. Click on Connect button

Hope it was helpful