Property details are correct in some portals, but not others.

The data we generate for the property portals is just a copy of what's held in Elevate, with a small number of minor differences in format. For the most part each portal is receiving exactly the same data and it then processes it in its own peculiar way. 

As a general rule of thumb, if the data is wrong on all portals the problem likely lies with Elevate, but if the problem is only on one portal, then you've guessed it, the problem is almost certainly with that particular portal.