Shows #Incorrect Argument set
=IF(AND(IF([Jan Scheduling Location]@row = "BPHO|Belen Public Health Office", [Jan Appt Type]@row, "Err1"), IFERROR(INDEX(DISTINCT(COLLECT([BPHO|Belen Public Health Office AT]:[BPHO|Belen Public Health Office AT], [BPHO|Belen Public Health Office AT]:[BPHO|Belen Public Health Office AT], NOT(ISBLANK(@cell )))), Index@row), "err2"), "err3"))