Error(14566): The Fitter cannot place 1 periphery component(s) due to conflicts with existing constr

Error(14566): The Fitter cannot place 1 periphery component(s) due to conflicts with existing constraints (1 I/O pad(s)). Fix the errors described in the submessages, and then rerun the Fitter. The Intel FPGA Knowledge Database may also contain articles with information on how to resolve this periphery placement failure. Review the errors and then visit the Knowledge Database at https://www.altera.com/support/support-resources/knowledge-base/search.html and search for this specific error message number.
Error(175019): Illegal constraint of I/O pad to the location PIN_AN15
Info(14596): Information about the failing component(s):
Info(175028): The I/O pad name(s): afe4_data_p[0](n)

This is for an Arria10 10AS066H2F34I2LG

We are trying to place a differential frame bit from an LVDS bus on pins AP15(P) and AN15(N). During compilation we are getting the error above.

This knowledge base article seemed relative, but it did not fix the issue. Please advise

https://www.intel.com/content/www/us/en/support/programmable/articles/000074695.html

Thanks,

john