ID:11899 Ignored "Input Transition Time" assignment of "<user specified input transition time>" ps on "<pin name>" for IO standard, "<io standard>". Input transition time dependent input buffer delays are not supported for differential I/O standards.

CAUSE: You have specified an "Input Transition Time" assignment on the specified pin. This pin is assigned a differential I/O standard. Input transition time dependent input buffer delays are not supported for differential I/O standards.

ACTION: Remove the input transition time assignment from pins which are assigned a differential I/O standard.