Here's what the user manual says:
REAR BUMPER ASSEMBLY
NMBT0005S01
1. Remove left and right rear wheel house finishers. Refer to “TRUNK ROOM TRIM”, BT-33.
2. Remove licence plate lamp. Then disconnect harness connectors.
3. Remove clips securing left and right chipping protectors.
4. Remove screws securing left and right rear fenders to bumper fascia.
5. Remove bolts and nuts securing left and right bumper fascia assemblies.
6. Remove clips securing bumper fascia assembly.
7. Extract bumper fascia assembly.
8. Remove screws securing licence plate lamp bracket, then remove the licence plate lamp bracket.
9. Remove clips securing left and right bumper side brackets, then remove the bumper side brackets.
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Hope this helps