AA award redemption. Cannot OLCI: "We apologise that Online Check-In is not available as we cannot locate your e-Ticket in your booking."

I called CX in Hongkong (I am in India and their local office is closed today). They said there is no problem, and they confirmed that the ticket number in their records is the same number I have.

Is this a bug/feature from CX's infamous IT department, or should I worry about being denied boarding when I get to the airport?

EDIT: I just tried OLCI using my AA ticket number rather than the CX record locator. That works..it finds my reservation using just the ticket number, but then says "...we cannot locate your e-Ticket in your booking." Nice.