Cannot set attribute Required to false when attribute URL Link is true for Background blocks.
"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."
SuccessFactors Employee Profile
For backgrounds blocks, if the attribute URL Link is Yes/True regardless of what is set up for Required attribute, the field will be required.
For making the field not required, the attributes Required and URL Link must be No/False
Required, Background, Field, URL Link , KBA , LOD-SF-EP , Employee Profile , How To