ID:186106 Project requires <number> GXB transmitter PLLs, but the target device can contain only <number> GXB transmitter PLLs because <number> quads are disabled by an I/O coupling issue

CAUSE: You selected a target device for the current project. However, the Fitter cannot place the project in the target device because the project requires more quads are disabled. These quads are disabled because they have an I/O coupling problem due to user I/O pin assignments.

ACTION: Modify the design to reduce the number of GXB transmitter PLLs in the project or select a larger device.