Difference between these 2 dimensions OmnID & User ID?
Can you please elaborate what's the difference between these 2 Dimensions and official definition of them?
Can you please elaborate what's the difference between these 2 Dimensions and official definition of them?
My suggestion is to check your admin console and see how those variables are defined. This is accessible via:
Admin Console > Report Suites > Select Your Report Suite(s) > Edit Settings > Conversion > Conversion Variables
This will help you find what eVars match to these two dimensions. As hyderziaee correctly mentions, you can then go back to your implementation team and ask how they are defined.

There's a chance that they are set up as Traffic Variables (props) instead of Conversion Variables (eVars). You can check that here:
Admin Console > Report Suites > Select Your Report Suite(s) > Edit Settings > Traffic > Traffic Variables

Beware that you'll need Admin access to your account in order to access these.
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