How to resolve the conflict between two layer labels?

[rawansaleh1]

Hi All,

Despite the fact that all labels placement methods and styles was tried ArcMap still fails to resolve the conflict between two layers labels?

In my case, I have two layers (the built-up area) and (well-known Sites). And I am using maplex engine I tried all placement and position changing procedures, but unfortunately the labels still have clashes between them as shown in the screenshots below:

 

Best,

Rawan