This is the relationship between the SCoT and the PLU/ PLUI (intercommunal and communal), and between the previous SDRIF/SAR/PADDUC/SRADDET and the SCoT (regional and intercommunal). Further, the SCoT must be compatible with landscape protection and improvement directives set out in the national Mountain and Coastal laws. Compatibility requirements are less demanding than are conformity requirements in the sense that conforming requires complete consistency, while compatibility allows significant differences, as long as the general intent of the superior plan is preserved.